Uchi no Otouto-domo ga Sumimasen

Description of anime Uchi no Otouto-domo ga Sumimasen

Ito Narita is a second-year high school student and an only child who has to move to a different city; her mother remarried and begins her new life as an older sister of 4 siblings! The start of a family-love-comedy with four step-brothers.

(Source: Mangadex)