兄が妹で妹が兄で [Ani ga Imouto de Imouto ga Ani de] [Ani-Imo]

In 兄が妹で妹が兄で (Ani ga Imouto de Imouto ga Ani de), a sibling comedy of errors from Kodansha's 2012–2015 run, a brother and sister wake up one morning to find their bodies swapped. The seven-issue series leans into the chaotic, awkward humor of two teenagers navigating each other's lives—school, friends, and personal habits—while trying to keep their predicament secret. Best remembered for its energetic, character-driven gags and the deft touch of its creator, it's a compact, charming entry in the body-swap genre that captures the absurdity of family bonds.