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.
She's just a normal mother 
and I'm just a normal son!
¡Solamente somos madre e hijo!
¡Somos madre e hijo!
Ela é uma mãe normal e
 eu sou um filho normal!