diff --git a/apps/client/src/config/index.ts b/apps/client/src/config/index.ts
index 1e465d4..514fee5 100644
--- a/apps/client/src/config/index.ts
+++ b/apps/client/src/config/index.ts
@@ -11,6 +11,10 @@
   PLAYER_LERP_SMOOTHNESS: 18,
   PLAYER_LERP_SNAP_THRESHOLD: 0.005,
   PLAYER_HIT_BLINK_MS: sharedConfig.GAME_CONFIG.PLAYER_HIT_STUN_MS,
+  PLAYER_HIT_BLINK_INTERVAL_MS: 100,
+  PLAYER_HIT_BLINK_HIDDEN_ALPHA: 0.2,
+  PLAYER_HIT_BLINK_MAX_DELTA_MS: 50,
+  PLAYER_HIT_EFFECT_DEDUP_WINDOW_MS: 300,
 
   GRID_CELL_SIZE: 100,
 
diff --git a/apps/client/src/scenes/game/GameManager.ts b/apps/client/src/scenes/game/GameManager.ts
index badaa47..4ba00ab 100644
--- a/apps/client/src/scenes/game/GameManager.ts
+++ b/apps/client/src/scenes/game/GameManager.ts
@@ -37,8 +37,8 @@
   private bombHitOrchestrator: BombHitOrchestrator | null = null;
   private networkSync: GameNetworkSync | null = null;
   private gameLoop: GameLoop | null = null;
-  private playerDeathPolicy: PlayerDeathPolicy;
-  private playerHitEffectOrchestrator: PlayerHitEffectOrchestrator;
+  private playerDeathPolicy!: PlayerDeathPolicy;
+  private playerHitEffectOrchestrator!: PlayerHitEffectOrchestrator;
   private reportedBombHitIds = new Set<string>();
 
   // サーバーからゲーム開始通知（と開始時刻）を受け取った時に呼ぶ
@@ -108,6 +108,11 @@
     this.app = new Application();
     this.worldContainer = new Container();
     this.worldContainer.sortableChildren = true;
+    this.initializeHitSubsystem();
+  }
+
+  /** 被弾時の入力制御と演出発火のサブシステムを初期化する */
+  private initializeHitSubsystem(): void {
     this.playerDeathPolicy = new PlayerDeathPolicy({
       myId: this.myId,
       hitStunMs: config.GAME_CONFIG.PLAYER_HIT_STUN_MS,
@@ -116,6 +121,7 @@
     this.playerHitEffectOrchestrator = new PlayerHitEffectOrchestrator({
       players: this.players,
       blinkDurationMs: config.GAME_CONFIG.PLAYER_HIT_BLINK_MS,
+      dedupWindowMs: config.GAME_CONFIG.PLAYER_HIT_EFFECT_DEDUP_WINDOW_MS,
     });
   }
 
diff --git a/apps/client/src/scenes/game/application/GameLoop.ts b/apps/client/src/scenes/game/application/GameLoop.ts
index b04bdb3..723411a 100644
--- a/apps/client/src/scenes/game/application/GameLoop.ts
+++ b/apps/client/src/scenes/game/application/GameLoop.ts
@@ -57,7 +57,7 @@
       isMoving,
     });
 
-    this.bombStep.run({ deltaSeconds });
+    this.bombStep.run();
 
     this.cameraStep.run({
       app: this.app,
diff --git a/apps/client/src/scenes/game/application/PlayerHitEffectOrchestrator.ts b/apps/client/src/scenes/game/application/PlayerHitEffectOrchestrator.ts
index fb2d989..aeeb2e3 100644
--- a/apps/client/src/scenes/game/application/PlayerHitEffectOrchestrator.ts
+++ b/apps/client/src/scenes/game/application/PlayerHitEffectOrchestrator.ts
@@ -8,30 +8,69 @@
 type PlayerHitEffectOrchestratorOptions = {
   players: GamePlayers;
   blinkDurationMs: number;
+  dedupWindowMs: number;
+  nowMsProvider?: () => number;
+};
+
+/** 被弾演出イベント名を表す型 */
+type PlayerHitEffectEventName = "local-bomb-hit" | "network-player-dead";
+
+/** 被弾演出イベント入力を表す型 */
+type PlayerHitEffectEvent = {
+  name: PlayerHitEffectEventName;
+  playerId: string;
+  localPlayerId: string;
 };
 
 /** 被弾演出の発火責務を管理するオーケストレーター */
 export class PlayerHitEffectOrchestrator {
   private readonly players: GamePlayers;
   private readonly blinkDurationMs: number;
+  private readonly dedupWindowMs: number;
+  private readonly nowMsProvider: () => number;
+  private readonly lastTriggeredAtByPlayerId = new Map<string, number>();
 
-  constructor({ players, blinkDurationMs }: PlayerHitEffectOrchestratorOptions) {
+  constructor({
+    players,
+    blinkDurationMs,
+    dedupWindowMs,
+    nowMsProvider = () => performance.now(),
+  }: PlayerHitEffectOrchestratorOptions) {
     this.players = players;
     this.blinkDurationMs = blinkDurationMs;
+    this.dedupWindowMs = dedupWindowMs;
+    this.nowMsProvider = nowMsProvider;
   }
 
   /** ローカル被弾時の点滅演出を発火する */
   public handleLocalBombHit(localPlayerId: string): void {
-    this.playBombHitBlink(localPlayerId);
+    this.dispatch({
+      name: "local-bomb-hit",
+      playerId: localPlayerId,
+      localPlayerId,
+    });
   }
 
   /** ネットワーク通知の被弾時に必要な点滅演出を発火する */
   public handleNetworkPlayerDead(playerId: string, localPlayerId: string): void {
-    if (playerId === localPlayerId) {
+    this.dispatch({
+      name: "network-player-dead",
+      playerId,
+      localPlayerId,
+    });
+  }
+
+  /** 被弾演出イベント名に応じて処理を分岐する */
+  public dispatch(event: PlayerHitEffectEvent): void {
+    if (event.name === "network-player-dead" && event.playerId === event.localPlayerId) {
       return;
     }
 
-    this.playBombHitBlink(playerId);
+    if (!this.shouldTrigger(event.playerId)) {
+      return;
+    }
+
+    this.playBombHitBlink(event.playerId);
   }
 
   /** 指定プレイヤーへ被弾点滅演出を適用する */
@@ -43,4 +82,16 @@
 
     target.playBombHitBlink(this.blinkDurationMs);
   }
+
+  /** 同一プレイヤーへの短時間重複発火を抑止する */
+  private shouldTrigger(playerId: string): boolean {
+    const nowMs = this.nowMsProvider();
+    const lastTriggeredAt = this.lastTriggeredAtByPlayerId.get(playerId);
+    if (lastTriggeredAt !== undefined && nowMs - lastTriggeredAt < this.dedupWindowMs) {
+      return false;
+    }
+
+    this.lastTriggeredAtByPlayerId.set(playerId, nowMs);
+    return true;
+  }
 }
\ No newline at end of file
diff --git a/apps/client/src/scenes/game/application/loopSteps/BombStep.ts b/apps/client/src/scenes/game/application/loopSteps/BombStep.ts
index 38c9d0f..f7d9d71 100644
--- a/apps/client/src/scenes/game/application/loopSteps/BombStep.ts
+++ b/apps/client/src/scenes/game/application/loopSteps/BombStep.ts
@@ -10,11 +10,6 @@
   bombManager: BombManager;
 };
 
-/** 爆弾更新段の実行入力 */
-type BombStepParams = {
-  deltaSeconds: number;
-};
-
 /** 爆弾更新処理を担うステップ */
 export class BombStep {
   private bombManager: BombManager;
@@ -23,8 +18,8 @@
     this.bombManager = bombManager;
   }
 
-  /** 爆弾更新を実行する */
-  public run(_params: BombStepParams): void {
+  /** 爆弾更新を実行する，時間管理は GameTimer 由来の経過時刻を利用する */
+  public run(): void {
     this.bombManager.tick();
   }
 }
diff --git a/apps/client/src/scenes/game/entities/player/PlayerController.ts b/apps/client/src/scenes/game/entities/player/PlayerController.ts
index 74bce98..1a03876 100644
--- a/apps/client/src/scenes/game/entities/player/PlayerController.ts
+++ b/apps/client/src/scenes/game/entities/player/PlayerController.ts
@@ -4,6 +4,7 @@
  * ローカル入力適用，リモート更新適用，描画同期を分離して扱う
  */
 import type { playerTypes } from "@repo/shared";
+import { config } from "@client/config";
 import { AppearanceResolver } from "@client/scenes/game/application/AppearanceResolver";
 import { BombHitBlinkRenderer } from "@client/scenes/game/entities/bomb/BombHitBlinkRenderer";
 import { PlayerModel } from "./PlayerModel";
@@ -41,6 +42,9 @@
     );
     this.bombHitBlinkRenderer = new BombHitBlinkRenderer({
       target: this.view.displayObject,
+      blinkIntervalMs: config.GAME_CONFIG.PLAYER_HIT_BLINK_INTERVAL_MS,
+      hiddenAlpha: config.GAME_CONFIG.PLAYER_HIT_BLINK_HIDDEN_ALPHA,
+      maxDeltaMs: config.GAME_CONFIG.PLAYER_HIT_BLINK_MAX_DELTA_MS,
     });
 
     const pos = this.model.getPosition();