diff --git a/apps/client/src/scenes/game/GameManager.ts b/apps/client/src/scenes/game/GameManager.ts
index a468fe4..410f186 100644
--- a/apps/client/src/scenes/game/GameManager.ts
+++ b/apps/client/src/scenes/game/GameManager.ts
@@ -110,8 +110,8 @@
       players: this.players,
       myId: this.myId,
       acquireInputLock: this.lockInput.bind(this),
-      onSendBombHitReport: (bombId, targetPlayerId) => {
-        gameActionSender.sendBombHitReport(bombId, targetPlayerId);
+      onSendBombHitReport: (bombId) => {
+        gameActionSender.sendBombHitReport(bombId);
       },
     });
     this.runtime = new GameSceneRuntime({
diff --git a/apps/client/src/scenes/game/application/BombHitContextProvider.ts b/apps/client/src/scenes/game/application/BombHitContextProvider.ts
deleted file mode 100644
index 691c13b..0000000
--- a/apps/client/src/scenes/game/application/BombHitContextProvider.ts
+++ /dev/null
@@ -1,49 +0,0 @@
-/**
- * BombHitContextProvider
- * 爆弾当たり判定で利用するローカルプレイヤー情報を供給する
- * プレイヤー管理構造から最小の判定DTOへ変換して返す
- */
-import { config } from "@client/config";
-import type { domain } from "@repo/shared";
-
-type TeamCollisionCircle = domain.game.bombHit.TeamCollisionCircle;
-import type { GamePlayers } from "./game.types";
-
-/** 被弾判定と報告に利用するプレイヤー円情報 */
-export type ReportablePlayerCircle = TeamCollisionCircle & {
-  playerId: string;
-};
-
-/** 判定用コンテキスト供給クラスの初期化入力 */
-type BombHitContextProviderOptions = {
-  players: GamePlayers;
-  myId: string;
-};
-
-/** 爆弾当たり判定に必要なローカルプレイヤー情報を返す */
-export class BombHitContextProvider {
-  private players: GamePlayers;
-  private myId: string;
-
-  constructor({ players, myId }: BombHitContextProviderOptions) {
-    this.players = players;
-    this.myId = myId;
-  }
-
-  /** 自プレイヤーの被弾判定用円情報を取得する（不在ならnull） */
-  public getLocalReportableCircle(): ReportablePlayerCircle | null {
-    const me = this.players[this.myId];
-    if (!me) return null;
-
-    const position = me.getPosition();
-    const snapshot = me.getSnapshot();
-
-    return {
-      playerId: this.myId,
-      x: position.x,
-      y: position.y,
-      radius: config.GAME_CONFIG.PLAYER_RADIUS,
-      teamId: snapshot.teamId,
-    };
-  }
-}
diff --git a/apps/client/src/scenes/game/application/BombHitOrchestrator.ts b/apps/client/src/scenes/game/application/BombHitOrchestrator.ts
index f0484ea..021f26f 100644
--- a/apps/client/src/scenes/game/application/BombHitOrchestrator.ts
+++ b/apps/client/src/scenes/game/application/BombHitOrchestrator.ts
@@ -1,17 +1,19 @@
 /**
  * BombHitOrchestrator
- * 爆弾爆発イベントとローカルプレイヤー情報を橋渡しして当たり判定を実行する
+ * 爆弾爆発イベントと自プレイヤー情報から当たり判定を実行する
  * 自プレイヤーのみを判定対象とし，Bot被弾はサーバー側で処理する
  */
+import { config } from "@client/config";
 import { domain } from "@repo/shared";
 
 const { checkBombHit } = domain.game.bombHit;
 import type { BombExplodedPayload } from "@client/scenes/game/entities/bomb/BombManager";
-import { BombHitContextProvider } from "./BombHitContextProvider";
+import type { GamePlayers } from "./game.types";
 
 /** 当たり判定オーケストレーターの初期化入力 */
 type BombHitOrchestratorOptions = {
-  contextProvider: BombHitContextProvider;
+  players: GamePlayers;
+  myId: string;
 };
 
 /** 爆弾爆発イベントの判定結果を表す型 */
@@ -22,11 +24,13 @@
 
 /** 爆弾当たり判定の実行順序を制御する */
 export class BombHitOrchestrator {
-  private contextProvider: BombHitContextProvider;
+  private readonly players: GamePlayers;
+  private readonly myId: string;
   private handledBombIds = new Set<string>();
 
-  constructor({ contextProvider }: BombHitOrchestratorOptions) {
-    this.contextProvider = contextProvider;
+  constructor({ players, myId }: BombHitOrchestratorOptions) {
+    this.players = players;
+    this.myId = myId;
   }
 
   /** 爆弾爆発イベントを受けて自プレイヤーの当たり判定を実行し結果を返す */
@@ -36,8 +40,8 @@
     }
 
     this.handledBombIds.add(payload.bombId);
-    const localPlayer = this.contextProvider.getLocalReportableCircle();
-    if (!localPlayer) {
+    const localCircle = this.getLocalPlayerCircle();
+    if (!localCircle) {
       return { status: "missing-local-player", hitPlayerId: null };
     }
 
@@ -48,18 +52,34 @@
         radius: payload.radius,
         teamId: payload.teamId,
       },
-      player: localPlayer,
+      player: localCircle,
     });
 
     if (!result.isHit) {
       return { status: "no-hit", hitPlayerId: null };
     }
 
-    return { status: "hit", hitPlayerId: localPlayer.playerId };
+    return { status: "hit", hitPlayerId: this.myId };
   }
 
   /** 判定済み状態を初期化する */
   public clear(): void {
     this.handledBombIds.clear();
   }
+
+  /** 自プレイヤーの判定用円情報を取得する */
+  private getLocalPlayerCircle() {
+    const me = this.players[this.myId];
+    if (!me) return null;
+
+    const position = me.getPosition();
+    const snapshot = me.getSnapshot();
+
+    return {
+      x: position.x,
+      y: position.y,
+      radius: config.GAME_CONFIG.PLAYER_RADIUS,
+      teamId: snapshot.teamId,
+    };
+  }
 }
diff --git a/apps/client/src/scenes/game/application/combat/CombatLifecycleFacade.ts b/apps/client/src/scenes/game/application/combat/CombatLifecycleFacade.ts
index c2fe46e..1e925bb 100644
--- a/apps/client/src/scenes/game/application/combat/CombatLifecycleFacade.ts
+++ b/apps/client/src/scenes/game/application/combat/CombatLifecycleFacade.ts
@@ -6,19 +6,17 @@
 import { config } from "@client/config";
 import type { PlayerDeadPayload } from "@repo/shared";
 import type { BombExplodedPayload } from "@client/scenes/game/entities/bomb/BombManager";
-import { BombHitContextProvider } from "@client/scenes/game/application/BombHitContextProvider";
 import { BombHitOrchestrator } from "@client/scenes/game/application/BombHitOrchestrator";
 import { PlayerDeathPolicy } from "@client/scenes/game/application/PlayerDeathPolicy";
 import { PlayerHitEffectOrchestrator } from "@client/scenes/game/application/PlayerHitEffectOrchestrator";
 import type { GamePlayers } from "@client/scenes/game/application/game.types";
-import { HitReportPolicy } from "./HitReportPolicy";
 
 /** CombatLifecycleFacade の初期化入力 */
 export type CombatLifecycleFacadeOptions = {
   players: GamePlayers;
   myId: string;
   acquireInputLock: () => () => void;
-  onSendBombHitReport: (bombId: string, targetPlayerId: string) => void;
+  onSendBombHitReport: (bombId: string) => void;
 };
 
 /** 被弾関連ライフサイクルの制御を担当する */
@@ -26,12 +24,10 @@
   private readonly myId: string;
   private readonly onSendBombHitReport: (
     bombId: string,
-    targetPlayerId: string,
   ) => void;
   private readonly bombHitOrchestrator: BombHitOrchestrator;
   private readonly playerDeathPolicy: PlayerDeathPolicy;
   private readonly playerHitEffectOrchestrator: PlayerHitEffectOrchestrator;
-  private readonly hitReportPolicy = new HitReportPolicy();
 
   constructor({
     players,
@@ -42,10 +38,8 @@
     this.myId = myId;
     this.onSendBombHitReport = onSendBombHitReport;
     this.bombHitOrchestrator = new BombHitOrchestrator({
-      contextProvider: new BombHitContextProvider({
-        players,
-        myId,
-      }),
+      players,
+      myId,
     });
     this.playerDeathPolicy = new PlayerDeathPolicy({
       myId,
@@ -66,10 +60,7 @@
 
     this.playerDeathPolicy.applyLocalHitStun();
     this.playerHitEffectOrchestrator.handleLocalBombHit(this.myId);
-
-    if (this.hitReportPolicy.shouldSendReport(result.status, payload.bombId, result.hitPlayerId)) {
-      this.onSendBombHitReport(payload.bombId, result.hitPlayerId);
-    }
+    this.onSendBombHitReport(payload.bombId);
   }
 
   /** ネットワーク被弾通知を適用する */
@@ -82,6 +73,5 @@
   public dispose(): void {
     this.bombHitOrchestrator.clear();
     this.playerDeathPolicy.dispose();
-    this.hitReportPolicy.clear();
   }
 }
\ No newline at end of file
diff --git a/apps/client/src/scenes/game/application/combat/HitReportPolicy.ts b/apps/client/src/scenes/game/application/combat/HitReportPolicy.ts
deleted file mode 100644
index e65cd87..0000000
--- a/apps/client/src/scenes/game/application/combat/HitReportPolicy.ts
+++ /dev/null
@@ -1,37 +0,0 @@
-/**
- * HitReportPolicy
- * 爆弾被弾報告の送信可否を判定するポリシー
- * 同一爆弾IDの重複送信を抑止する
- */
-
-/** 被弾判定結果の最小表現型 */
-export type HitEvaluationResult = "duplicate" | "missing-local-player" | "no-hit" | "hit";
-
-/** 爆弾被弾報告の送信可否を管理する */
-export class HitReportPolicy {
-  private readonly reportedBombHitKeys = new Set<string>();
-
-  /** 被弾報告を送信すべき場合に true を返す */
-  public shouldSendReport(
-    result: HitEvaluationResult | undefined,
-    bombId: string,
-    targetPlayerId: string,
-  ): boolean {
-    if (result !== "hit") {
-      return false;
-    }
-
-    const reportKey = `${bombId}:${targetPlayerId}`;
-    if (this.reportedBombHitKeys.has(reportKey)) {
-      return false;
-    }
-
-    this.reportedBombHitKeys.add(reportKey);
-    return true;
-  }
-
-  /** 判定済みIDをすべて破棄する */
-  public clear(): void {
-    this.reportedBombHitKeys.clear();
-  }
-}
\ No newline at end of file
diff --git a/apps/client/src/scenes/game/application/network/GameActionSender.ts b/apps/client/src/scenes/game/application/network/GameActionSender.ts
index 358ec60..8c22eb2 100644
--- a/apps/client/src/scenes/game/application/network/GameActionSender.ts
+++ b/apps/client/src/scenes/game/application/network/GameActionSender.ts
@@ -10,7 +10,7 @@
 export type GameActionSender = {
   readyForGame: () => void;
   sendPlaceBomb: (payload: PlaceBombPayload) => void;
-  sendBombHitReport: (bombId: string, targetPlayerId: string) => void;
+  sendBombHitReport: (bombId: string) => void;
 };
 
 /** ソケット経由でゲーム中送信アクションを実行する実装 */
@@ -26,7 +26,7 @@
   }
 
   /** 被弾報告をサーバーへ送信する */
-  public sendBombHitReport(bombId: string, targetPlayerId: string): void {
-    socketManager.game.sendBombHitReport({ bombId, targetPlayerId });
+  public sendBombHitReport(bombId: string): void {
+    socketManager.game.sendBombHitReport({ bombId });
   }
 }
\ No newline at end of file
diff --git a/apps/server/src/domains/game/application/ports/gameUseCasePorts.ts b/apps/server/src/domains/game/application/ports/gameUseCasePorts.ts
index bf0d735..95e1944 100644
--- a/apps/server/src/domains/game/application/ports/gameUseCasePorts.ts
+++ b/apps/server/src/domains/game/application/ports/gameUseCasePorts.ts
@@ -74,8 +74,8 @@
   ): void;
 }
 
-/** 爆弾ユースケースが利用する送信出力ポート */
-export interface BombOutputPort {
+/** 爆弾設置ユースケースが利用する送信出力ポート */
+export interface BombPlacementOutputPort {
   publishBombPlacedToOthersInRoom(
     roomId: domain.room.Room["roomId"],
     ownerSocketId: string,
@@ -85,6 +85,10 @@
     socketId: string,
     payload: BombPlacedAckPayload,
   ): void;
+}
+
+/** プレイヤー死亡通知の送信出力ポート */
+export interface PlayerDeadOutputPort {
   publishPlayerDeadToOthersInRoom(
     roomId: domain.room.Room["roomId"],
     deadPlayerId: string,
@@ -93,10 +97,7 @@
 }
 
 /** 爆弾設置ユースケースが利用する出力ポート */
-export type PlaceBombOutputPort = Pick<
-  BombOutputPort,
-  "publishBombPlacedToOthersInRoom" | "publishBombPlacedAckToSocket"
->;
+export type PlaceBombOutputPort = BombPlacementOutputPort;
 
 /** start-game 系フローで利用する送信出力ポート */
 export type StartGameOutputPort = Pick<
@@ -107,12 +108,8 @@
   | "publishGameResultToRoom"
   | "publishGameStartToRoom"
 > &
-  Pick<
-    BombOutputPort,
-    | "publishBombPlacedToOthersInRoom"
-    | "publishBombPlacedAckToSocket"
-    | "publishPlayerDeadToOthersInRoom"
-  >;
+  BombPlacementOutputPort &
+  PlayerDeadOutputPort;
 
 /** 爆弾設置ユースケースが利用する爆弾状態入力ポート */
 export interface BombPlacementPort {
@@ -150,7 +147,4 @@
 };
 
 /** 被弾報告ユースケースが利用する出力ポート */
-export type BombHitOutputPort = Pick<
-  BombOutputPort,
-  "publishPlayerDeadToOthersInRoom"
->;
+export type BombHitOutputPort = PlayerDeadOutputPort;
diff --git a/apps/server/src/domains/game/application/useCases/reportBombHitValidation.ts b/apps/server/src/domains/game/application/useCases/reportBombHitValidation.ts
index 6437ea4..7dfd691 100644
--- a/apps/server/src/domains/game/application/useCases/reportBombHitValidation.ts
+++ b/apps/server/src/domains/game/application/useCases/reportBombHitValidation.ts
@@ -12,7 +12,6 @@
   const dedupeKey = createBombHitReportDedupeKey(
     input.socketId,
     input.payload.bombId,
-    input.payload.targetPlayerId,
   );
   return validation.shouldBroadcastBombHitReport(dedupeKey, input.nowMs);
 };
diff --git a/apps/server/src/domains/game/entities/bomb/bombHitReport.ts b/apps/server/src/domains/game/entities/bomb/bombHitReport.ts
index 24478f8..5ca7406 100644
--- a/apps/server/src/domains/game/entities/bomb/bombHitReport.ts
+++ b/apps/server/src/domains/game/entities/bomb/bombHitReport.ts
@@ -7,11 +7,6 @@
 export const createBombHitReportDedupeKey = (
   reporterSocketId: string,
   bombId: string,
-  targetPlayerId?: string,
 ): string => {
-  if (targetPlayerId) {
-    return `${bombId}:${targetPlayerId}`;
-  }
-
   return `${reporterSocketId}:${bombId}`;
 };
diff --git a/apps/server/src/network/handlers/game/createGameOutputAdapter.ts b/apps/server/src/network/handlers/game/createGameOutputAdapter.ts
index 530bbe1..5ac2cf9 100644
--- a/apps/server/src/network/handlers/game/createGameOutputAdapter.ts
+++ b/apps/server/src/network/handlers/game/createGameOutputAdapter.ts
@@ -18,7 +18,8 @@
   UpdatePlayersPayload,
 } from "@repo/shared";
 import type {
-  BombOutputPort,
+  BombPlacementOutputPort,
+  PlayerDeadOutputPort,
   GameOutputPort,
 } from "@server/domains/game/application/ports/gameUseCasePorts";
 import { sanitizeUpdatePlayersPayload } from "@server/network/adapters/gamePayloadSanitizers";
@@ -32,7 +33,8 @@
   GameOutputPort,
   "publishPlayerRemovedToRoom"
 > &
-  BombOutputPort;
+  BombPlacementOutputPort &
+  PlayerDeadOutputPort;
 
 /** ゲーム切断時の出力アダプターのインターフェース */
 export type GameDisconnectOutputAdapter = Pick<
diff --git a/apps/server/src/network/validation/socketPayloadValidators.ts b/apps/server/src/network/validation/socketPayloadValidators.ts
index 981940b..b999b69 100644
--- a/apps/server/src/network/validation/socketPayloadValidators.ts
+++ b/apps/server/src/network/validation/socketPayloadValidators.ts
@@ -51,12 +51,6 @@
   }
 
   const candidate = value as Record<string, unknown>;
-  const targetPlayerId = candidate.targetPlayerId;
-
-  if (targetPlayerId !== undefined && !isNonEmptyString(targetPlayerId)) {
-    return false;
-  }
-
   return isNonEmptyString(candidate.bombId);
 };
 
diff --git a/packages/shared/src/protocol/payloads/gamePayloads.ts b/packages/shared/src/protocol/payloads/gamePayloads.ts
index d70c94b..7090983 100644
--- a/packages/shared/src/protocol/payloads/gamePayloads.ts
+++ b/packages/shared/src/protocol/payloads/gamePayloads.ts
@@ -106,7 +106,6 @@
 /** bomb-hit-report イベントで送受信する被弾報告 */
 export type BombHitReportPayload = {
   bombId: string;
-  targetPlayerId?: string;
 };
 
 /** player-dead イベントで送受信する死亡プレイヤー情報 */