Mahiro's Time of the Month

ONIMAI: I'm Now Your Sister! · Episode 2 · “Mahiro's Time of the Month”

Mahiro Oyama was just a normal erotic-game loving dude…until he woke up one morning as a woman! Turns out his mad-scientist little sister, Mihari, tried out one of her new experiments on him…with a disastrous outcome, as far as Mahiro’s concerned! But Mihari is as determined to study him as he is...