Shoujo Renai Heni

In this society, all individuals are born female, with some developing male characteristics at maturity. Momoka and Arisu share a close friendship, and Momoka hopes to transition to male in order to marry Arisu. However, during an encounter with a rapist, it is unexpectedly Arisu who undergoes a transformation into a male form. This change appears inconsistent, as Arisu reverts to a female state once the initial surge of adrenaline subsides.