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.
You don't usually fight, 
but I'm not surprised...
Usualmente no pelean, pero no me sorprende
normalmente no se pelean, pero no me sorprende
Vocês não costumam brigar,
 mas não me surpreende...