Onii-chan Dakedo Ai sae Areba Kankei nai yo ne Temporada 1 Episódio 7

Akiko is upset over not being consulted before Arisa, who claims to be Akitos fiancée, was hired as dorm manager. Later that day, Arashi proposes that Akiko and Arisa compete in a contest, to see which one of them is the better little sister to Akito.