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.
I'm deciding what to keep 
and what to throw out.
Decido con que me quedo y que voy a botar.
Decido con qué me quedo y qué voy a tirar.
Estou decidindo o que manter 
e o que jogar fora.