The manga “Itoko No Onee-Chan Ni Amaechau?” is a popular work in the genres of Comedy, Ecchi, Romance, and Seinen. The story centers on Masato Ooizumi, a young boy who has just entered high school. He ends up living with a relative, his voluptuous and often overly close cousin, which leads to comedic and romantic situations. The manga explores their interactions and the complicated, often amusing dynamics that arise from their living together.
The main protagonists are:
- Masato Ooizumi: A high school boy who moves in with his cousin.
- His cousin: A well-endowed young woman who is often very close to Masato, creating tension and humor in the story.
This manga is noted for its blend of humor, romance, and ecchi elements targeted at a seinen audience, combining slice-of-life and romantic comedy themes.
In chapter 15, Masato wins a race against his cousin, who, as punishment, agrees to be tickled. The boy is stunned by this possibility and, as soon as he touches her armpits, the woman appears terrified at the thought of being tickled. However, something unexpected happens and the punishment is postponed. The girl tells Masato that he is terrible at tickling.


















