KTRA-403 — A Devilish Little Sister Seduces Her Virgin Brother In Her Naughty Daily Life. Aira Ochi

A cheerful, proactive, devilish sister "Aira" who is loyal to her instincts, and a slightly quieter brother. Aira loves her brother so much that the more she thinks that there is a line that must never be crossed, the more excited and fired up she becomes. Using every trick in the book, Aira seduces and seduces her "serious" brother with her insane provocations! Gradually, the brother's reason crumbles, and in the end, he is at the mercy of his "devilish" sister...