Parfait Tic (2018)

Fuko Kameyama is a first grade high school student and she has a bright personality. One day, cousins Daiya Shinpo and Ichi Shinpo move into an apartment upstairs from Fuko. Daiya has a bright smile. Ichi doesn't talk that much, but he has a warm heart. Fuko wavers between Daiya and Ichi.