High school sophomore Ito was excited for a new dad when her mom remarried, but she may have gained more than she bargained for when she found four younger stepbrothers waiting at home. There’s blunt but secretly caring Gen, calm Raku, reclusive Syu, and cheerful little Rui. Now, Ito must go from the quiet of being an only child to learning how to be the eldest sister of a lively household.
Cast: Naomi Ohzora, Toshiki Masuda, Taku Yashiro
Season 1
12 episodes
1. Welcome to the Narita FamilyOnly-child Ito’s life changes overnight when her mom remarries—and she gains four new stepbrothers!CC24minJul 4, 2026
2. Lies Make FamiliesIto suggest Mom goes with Dad since they just got married. But Gen tells Ito to go as well and not come back?!CC24minJul 11, 2026
3. The Narita Family’s New RuleIto's midterm scores are terrible, so Raku helps her study in secret because Gen can't find out!CC24minJul 18, 2026
4. Unable to Be HonestGomez has run away, and during the search Gen gets hurt. Even then, he won't allow Ito to take care of him.CC24minJul 25, 2026
5. Shut Away AngelThe whole family is together for a BBQ -- except the shut in, Shu. Can Ito finally get through to him?CC24minAug 1, 2026
6. Siblings’ FeelingsIto and Shu's party is facing their fiercest opponent yet. Can they overcome this challenge and break free?CC24minAug 8, 2026
7. My Younger Brother Is a Prince?It's summer, so the family goes to see Ito's friends. Back in school, Gen is forced to be a prince for a play?CC24minAug 15, 2026
8. What’ll Happen to the Cultural Festival?!Ito feels some way about Gen, but she’s not sure what exactly. Udagawa sees right through her and says it's...CC24minAug 22, 2026
9. The Birthday Present BonusIto realizes she has romantic feelings for Gen. Raku finds out, and Gen overhears them talking about it.CC24minAug 29, 2026
10. A Sign of ConnectionShu has a cosplayer friend?! Shu wants to meet this friend at an IRL event, but can he muster the courage?CC24minSep 5, 2026
11. The Hiroshima Onomichi Steam IncidentIto and Gen end up sightseeing alone on the school trip, and then something unexpected occurs…?!CC24minSep 12, 2026- 12. Episode 12No synopsis available yet.CC24minSep 19, 2026
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High school sophomore Ito was excited for a new dad when her mom remarried, but she may have gained more than she bargained for when she found four younger stepbrothers waiting at home. There’s blunt but secretly caring Gen, calm Raku, reclusive Syu, and cheerful little Rui. Now, Ito must go from the quiet of being an only child to learning how to be the eldest sister of a lively household.
Creators and cast
- Studio
- Lay-duce, Aniplex, Shueisha
