相原 夏美

Natsumi is Takuya's spiteful step-sister. She's older and up until now has pretty much ignored her step-sibling. However, after the change, Natsumi will take a very perverse delight in torturing her new "sister". Natsumi's boyfriend, Seiji, might also find the new Takuya interesting. With such peculiar people interested in him, Takuya's time as a female will likely (not) be as fun as he hopes it to be.