diff --git a/src/app/class/card-stack.ts b/src/app/class/card-stack.ts
index 1198736a5..6f5e17e28 100644
--- a/src/app/class/card-stack.ts
+++ b/src/app/class/card-stack.ts
@@ -118,7 +118,7 @@ export class CardStack extends TabletopObject {
   putOnTop(card: Card): Card {
     if (!this.cardRoot) return null;
     if (!this.topCard) return this.putOnBottom(card);
-    card.owner = '';
+    card.owners = [];
     card.zindex = 0;
     let delta = Math.abs(card.rotate - this.rotate);
     if (180 < delta) delta = 360 - delta;
@@ -129,7 +129,7 @@ export class CardStack extends TabletopObject {
 
   putOnBottom(card: Card): Card {
     if (!this.cardRoot) return null;
-    card.owner = '';
+    card.owners = [];
     card.zindex = 0;
     let delta = Math.abs(card.rotate - this.rotate);
     if (180 < delta) delta = 360 - delta;
diff --git a/src/app/class/card.ts b/src/app/class/card.ts
index d97196f04..0923e8420 100644
--- a/src/app/class/card.ts
+++ b/src/app/class/card.ts
@@ -15,7 +15,7 @@ export enum CardState {
 export class Card extends TabletopObject {
   @SyncVar() state: CardState = CardState.FRONT;
   @SyncVar() rotate: number = 0;
-  @SyncVar() owner: string = '';
+  @SyncVar() owners: Array<string> = [];
   @SyncVar() zindex: number = 0;
 
   get isVisibleOnTable(): boolean { return this.location.name === 'table' && (!this.parentIsAssigned || this.parentIsDestroyed); }
@@ -29,23 +29,25 @@ export class Card extends TabletopObject {
   get imageFile(): ImageFile { return this.isVisible ? this.frontImage : this.backImage; }
 
   get ownerName(): string {
-    let object = PeerCursor.findByUserId(this.owner);
-    return object ? object.name : '';
+    return this.owners.map(owner => PeerCursor.findByUserId(owner))
+      .filter(peerCursor => peerCursor)
+      .map(peerCursor => peerCursor.name)
+      .join(', ');
   }
 
-  get hasOwner(): boolean { return 0 < this.owner.length; }
-  get isHand(): boolean { return Network.peerContext.userId === this.owner; }
+  get hasOwner(): boolean { return 0 < this.owners.length; }
+  get isHand(): boolean { return this.owners.includes(Network.peerContext.userId); }
   get isFront(): boolean { return this.state === CardState.FRONT; }
   get isVisible(): boolean { return this.isHand || this.isFront; }
 
   faceUp() {
     this.state = CardState.FRONT;
-    this.owner = '';
+    this.owners = [];
   }
 
   faceDown() {
     this.state = CardState.BACK;
-    this.owner = '';
+    this.owners = [];
   }
 
   toTopmost() {
diff --git a/src/app/component/card/card.component.ts b/src/app/component/card/card.component.ts
index 2a56edf48..0a6728aa5 100644
--- a/src/app/component/card/card.component.ts
+++ b/src/app/component/card/card.component.ts
@@ -43,8 +43,8 @@ export class CardComponent implements OnInit, OnDestroy, AfterViewInit {
   set state(state: CardState) { this.card.state = state; }
   get rotate(): number { return this.card.rotate; }
   set rotate(rotate: number) { this.card.rotate = rotate; }
-  get owner(): string { return this.card.owner; }
-  set owner(owner: string) { this.card.owner = owner; }
+  get owners(): Array<string> { return this.card.owners; }
+  set owners(owners: Array<string>) { this.card.owners = owners; }
   get zindex(): number { return this.card.zindex; }
   get size(): number { return this.adjustMinBounds(this.card.size); }
 
@@ -89,7 +89,7 @@ export class CardComponent implements OnInit, OnDestroy, AfterViewInit {
         if (!this.card || !object) return;
         if ((this.card === object)
           || (object instanceof ObjectNode && this.card.contains(object))
-          || (object instanceof PeerCursor && object.userId === this.card.owner)) {
+          || (object instanceof PeerCursor && this.card.owners.includes(object.userId))) {
           this.changeDetector.markForCheck();
         }
       })
@@ -101,7 +101,7 @@ export class CardComponent implements OnInit, OnDestroy, AfterViewInit {
       })
       .on('DISCONNECT_PEER', event => {
         let cursor = PeerCursor.findByPeerId(event.data.peerId);
-        if (!cursor || this.card.owner === cursor.userId) this.changeDetector.markForCheck();
+        if (!cursor || this.card.owners.includes(cursor.userId)) this.changeDetector.markForCheck();
       });
     this.movableOption = {
       tabletopObject: this.card,
@@ -173,7 +173,7 @@ export class CardComponent implements OnInit, OnDestroy, AfterViewInit {
       console.log('onDoubleClick !!!!');
       if (this.hasOwner && !this.isHand) return;
       this.state = this.isVisible && !this.isHand ? CardState.BACK : CardState.FRONT;
-      this.owner = '';
+      this.owners = [];
       SoundEffect.play(PresetSound.cardDraw);
     }
   }
@@ -213,8 +213,8 @@ export class CardComponent implements OnInit, OnDestroy, AfterViewInit {
       ),
       (this.isHand
         ? {
-          name: '裏にする', action: () => {
-            this.card.faceDown();
+          name: '見るのをやめる', action: () => {
+            this.owners = this.owners.filter(owner => owner !== Network.peerContext.userId);
             SoundEffect.play(PresetSound.cardDraw);
           }
         }
@@ -222,9 +222,22 @@ export class CardComponent implements OnInit, OnDestroy, AfterViewInit {
           name: '自分だけ見る', action: () => {
             SoundEffect.play(PresetSound.cardDraw);
             this.card.faceDown();
-            this.owner = Network.peerContext.userId;
+            this.owners = [Network.peerContext.userId];
           }
         }),
+      (!this.isHand && this.hasOwner
+        ? {
+          name: '自分も見る', action: () => {
+            SoundEffect.play(PresetSound.cardDraw);
+            let newOwners = this.owners.concat(Network.peerContext.userId);
+            this.card.faceDown();
+            this.owners = newOwners;
+          }
+        }
+        : {
+          name: null, enabled: false
+        }
+      ),
       ContextMenuSeparator,
       {
         name: '重なったカードで山札を作る', action: () => {
diff --git a/src/app/service/context-menu.service.ts b/src/app/service/context-menu.service.ts
index 3945aa315..1a56699b7 100644
--- a/src/app/service/context-menu.service.ts
+++ b/src/app/service/context-menu.service.ts
@@ -61,7 +61,7 @@ export class ContextMenuService {
 
     childPanelService.panelComponentRef = panelComponentRef;
     if (actions) {
-      childPanelService.actions = actions;
+      childPanelService.actions = actions.filter(act => act.enabled === undefined || act.enabled);
     }
     if (position) {
       childPanelService.position.x = position.x;