Koukou Debut shita Juumai ga Mount Tottekuru

My Younger Cousin Who Made Her High School Debut Asserts Her Dominance · 高校デビューした従妹がマウントとってくる

Updated June 2026

Koukou Debut shita Juumai ga Mount Tottekuru is a completed Comedy, Gyaru, Incest manga (2022). Read it online free on XOmanga.

I have a cousin who’s 3 years younger than me. Before, she was just a generic girl, but ever since getting into high school, she’s become a wonderful gal. Going through our everyday life, she would mount me, or so I thought, but there were tears, and believing lies, huh? It’s only her look that’s changed!? Dominating and getting dominated! A pure older brother and a bad and easy going cousin, 1 on 1 love comedy, begins!!