S1, E3: Fuku-chan and Katsuko are confronting Suzu, who is secretly eating canned tuna despite her stomachache. Saki explains that their mother's reason for lying is that she does not want to be alone with Fuku-chan. While Fuku-chan is shocked to learn that she is the cause of the problem, Mampei, who is struggling to run his business, is approached by a man named Kajitani.