On New Year's Eve, the Asabane household finds itself a little busier than usual with cleaning.
While cleaning their room, Yuta accidentally gets water on Yuki's manga.
Yuta and Yuki get into a fight, ending with Yuki leaving the house.
Yuta has trouble understanding the situation until a piece of paper he finds in the edge of his room triggers his memory.
to use your son's friends 
to make me feel bad.
es usar a los amigos de tu 
hijo para que me sienta mal.
es usar a los amigos de tu 
hijo para que me sienta mal.
os amigos do seu filho para 
que ele se sinta culpado.