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 was deciding which issues 
of Animajor to keep.
Estaba decidiendo que tomos 
de Animajor quedarme.
Estaba decidiendo con qué 
tomos de Animajor me quedo.
Estava escolhendo quais edições
 do Animajor guardar.