cover for ONIMAI: I'm Now Your Sister!, 3

ONIMAI: I'm Now Your Sister!, Volume 3

Former shut-in Mahiro Oyama was transformed into a girl thanks to his little sister Mihari's experimental drug… and he's starting to like it! But his independent lifestyle is ruined when Mihari enrolls him in middle school! Can Mahiro survive middle school for a second time—and as a girl, to boot?! The brother-turned-beauty's schoolgirl life begins here!

cover for ONIMAI: I'm Now Your Sister!, 4

Next Volume: ONIMAI: I'm Now Your Sister!, Volume 4

Former twenty-something shut-in Mahiro Oyama was transformed into a girl by an experimental drug… and now he's a seventh grader, too! As he adjusts to schoolgirl life, he begins to...

Most Recent Volume: ONIMAI: I'm Now Your Sister!, Volume 5

This brother has girl power of monstrous proportions! Former twenty-something shut-in Mahiro Oyama was transformed into a girl by an experimental drug, and now he's celebrating birthdays, buying bras, and...