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.
Huh? Oh, sorry.
¿Eh? Oh, lo siento.
¿Eh? Oh, lo siento.
Hein? 
Ah, foi mal.