Shojo Ane, Kangaeru

A high school boy lives with his older sister, who is known for her voluptuous figure and glasses. One day, he accidentally walks in on her while she is changing, sparking a series of awkward and increasingly intimate encounters. As he struggles with his growing desires, his sister begins to notice his unusual behavior and starts to question his intentions.

The siblings find themselves drawn into a taboo relationship, exploring their forbidden feelings in secret. Their interactions blur the line between familial affection and sexual tension, leading to a confrontation that changes their dynamic forever.