妻とは結婚相談所で知り合った、いわゆるお見合い結婚。学生時代に経験したような恋焦がれる気持ちはなかったけれど、僕みたいな平凡な人間にはこれ以上ない相手だと思った。だけど神様は意地悪である。偶然学生時代大好きだったヒカリちゃんと鉢合わせるなんて。終電を逃した夜、僕は妊娠中の妻を忘れて、昔大好きだった女の子と一線を越えた。

I met my wife through a marriage agency; it was what you'd call an arranged marriage. I didn't feel the same kind of yearning for love that I'd experienced in my student days, but I thought she was the perfect match for an ordinary guy like me. But God is cruel. I ended up running into Hikari, the girl I had a crush on in my student days. One night, after missing the last train, I forgot about my pregnant wife and crossed the line with the girl I used to love.