Kami nomi zo Shiru Sekai Temporada 1 Episódio 2

Keima confronts Elsie on why shes still here and he still has the magic collar on his neck which the latter reveals that their contract is still not finish and the collar will only be removed until they capture all of the runaway spirits in the city. After meeting Keimas mother, Mari, Elsie claims she is her “husbands illegitimate child” which Mari snaps on her husband on the phone for his “infidelity” and allows Elsie to stay with them. Keima however, refuses to accept Elsie as his little sister as in his view, she doesnt have the requirements that qualify her to be one which she tries to impress him albeit unsuccessfully. But upon hearing her story on wanting to be successful just like her older sister, Keima reluctantly accepts Elsie as his sister.