Renji Kusakabe, an arcade employee, one day notices a small foreign girl struggling to win a stuffed toy called "Manly Koala" from a crane game. Three hours later, after finishing his shift, Renji sees the girl still at the game, but the toy remains unmoved. Feeling sorry for her, he decides to help. He inserts a 100-yen coin and, with one skillful try, wins the toy, which he then hands to the girl. Startled by this unexpected gesture, the girl looks at Renji with suspicion. Flustered, Renji hastily tells her it's a Valentine's Day gift. Little does he know, in her home country of England, Valentine's Day is traditionally when men give women gifts along with a confession of love.
在游戏中心打工的青年·草壁莲司,看到一位英国少女莉莉在情人节独自沉迷于抓娃娃机。挑战多次都拿不到奖品而快哭的她,让莲司忍不住出手相助。成功拿到玩偶的莉莉,后来送给他一张写着意外留言的卡片—— “Be My Valentine!”(做我的恋人吧!) 与可爱天真的英国少女相遇,一场因误会开始的游戏中心跨文化交流。