Cece
Liz
Jorge

En una ciudad desconocida, en un edificio a través de las ventanas se puede ver el momento exacto en el que las cosas cambian. El antes comienza a ser el después y viceversa. Y nada vuelve a ser como antes. En este universo idéntico y diferente a la vez, se ve como los personajes cambian para siempre. In an unknown city, in a building through the windows you can see the exact moment when things change. The before begins to be the after and vice versa. And nothing goes back to the way it was before. In this identical and different universe at the same time, it is seen how the characters change forever.

Yoichi quits his research position at university after quarreling with his professor and works as a temporary lecturer at a cram school. He is over thirty and thinks about his next steps in life, but can't bring himself to marry his long-time girlfriend. At which point he encounters Tsukiyo, a love interest from his high school days.