Baku Ane 2: Otouto Ippai Shibocchau zo! The Animation, Episode 1 Raw

ばくあね2 弟いっぱいしぼっちゃうぞ! THE ANIMATION / Baku Ane 2: Otouto Ippai Shibocchau zo! The Animation

The protagonist, Munetaka Busaka, fails his first sexual experience with his first girlfriend due to past trauma. Feeling down, his older sister Ritsuka and cousin Mashiro offer to give him a hands-on lesson in sex and help him overcome his trauma. However, their other sister Kazune, who was responsible for causing his trauma, also joins in, turning the lesson into something more than just a simple teaching session. A battle between the sisters for Munetaka’s affection now begins!