Ichigo Aika: Zatsu de Namaiki na Imouto to Warikirenai Ani 3 Uncensored

Despite Aika skipping school and bringing boys home—behavior that could be called delinquent—she hides it from her parents and acts like a model daughter... Living together, Kota witnesses her dual nature firsthand. One day, Kota accidentally runs into Aika in the bathroom right after she's had a shower. Wondering which is the real Aika, he plucks up the courage to ask her directly...