When 16-year-old Nanako Misonoo enters the prestigious all-girls Seiran Academy, she believes a bright future awaits her. Instead, the unlucky girl finds herself dragged into a web of deceit, misery, and jealousy. On top of that, she is chosen as the newest inductee of the Sorority, an elite group whose members are the envy of the entire school. Having none of the grace, wealth, or talent of the other members, Nanako quickly draws the ire of her jealous classmates—especially the fierce Aya Misaki.
To cope with her increasingly difficult school life, Nanako recalls her days through letters to her former teacher, Takehiko Henmi, whom she affectionately calls "onii-sama" (big brother). She also finds comfort with her four closest friends: her childhood friend Tomoko Arikura, the sociable but erratic Mariko Shinobu, the troubled musician Rei Asaka, and the athletic tomboy Kaoru Orihara.
An impassioned drama about the hardships of bullying, Oniisama e... chronicles a young girl's harsh life at her new school, as she endures cruel rumours, heartless classmates, and countless social trials.
[Written by MAL Rewrite]+ More
Characters & Voice Actors

Arikura, Tomoko
Supporting
English Teacher
Supporting
Henmi, Takehiko
Supporting
Ichinomiya, Takashi
Supporting
Japanese Teacher
SupportingRecommended for you
Ginga Eiyuu Densetsu Gaiden
OVA
26m
High Score Girl II
TV
23m
The Wind Rises
Movie
126m
Assassination Classroom
TV
23m
Haikyuu!! Movie 4: Concept no Tatakai
Movie
88m
Ace of Diamond
TV
24m
Initial D Second Stage
TV
23m
Kuroko no Basket: Saikou no Present Desu
Special
23m
Terror in Resonance
TV
22m
Beastars
TV
22m
Silver Spoon
TV
23m
KILL la KILL
TV
24m
A Lull in the Sea
TV
23m
Gosick
TV
24m