Onee-chan ga Kita

Onee-chan ga Kita is a TV anime comedy-romance series adapted from the manga by Ansai Rikou. The story dives into the hilariously chaotic daily life that unfolds when Ichika Mizuhara, an overly devoted older sister, enters the life of her new stepbrother Tomoya Mizuhara. Packed with non-stop laughs and heartwarming sibling dynamics, the series also features a colorful supporting cast including Marina Mochizuki and Mina Fujisaki, keeping every episode fresh and entertaining. Produced by C2C, with Yoshiaki Yuzumi serving as both director and series composer, the show delivers a sharp, fast-paced comedic experience perfectly crafted for fans of lighthearted slice-of-life anime.

Tomoya Mizuhara is an ordinary 13-year-old boy whose quiet everyday life takes an unexpected turn when his father decides to remarry. Almost overnight, he finds himself with a brand-new older sister — 17-year-old Ichika Mizuhara, whose personality is anything but ordinary. Ichika showers Tomoya with an intense, almost overwhelming level of affection that leaves him constantly off-balance. As if adjusting to his new family dynamic weren't enough, Tomoya must also navigate the colorful personalities of Ichika's close friends: the sharp-tongued and unapologetically sadistic Ruri Hayasaka, and the cheerful, quarter-Japanese Marina Mochizuki. Brought together by circumstance, this unlikely group turns Tomoya's once-predictable home life into a whirlwind of chaos and comedy. The story is a lighthearted slice-of-life comedy that explores the bonds of family and friendship through the eyes of a young boy thrust into a hilariously unpredictable new world.