OPM: Vei Rin

Abandoned by her parents and raised by wild white tigers, Veirin journeys through life to find out why her parents had abandoned her. Veirin has a split personality, one that shows during the day and the other that awakens at night; as Vei looks for information during the day, Rin searches at night to help find something regarding their parents. Genos, Saitama, and Sonic are forced to party up in order to find out if Rin is a villain or a hero, no one knows who Rin is behind the mask and they eventually grow suspicious of Vei.

Once they finally manage to uncover her, a powerful villain that's a threat to both Villain and Hero emerges and gives Saitama a difficult time later on. This Villain...believes that both sides of good and evil are all after the same thing, to win and rule over the other.

So being the shadow between the two forces, he plans on taking them both down, to put an end to the eternal conflict. His love for Veirin, the desire of continuing with his plans and solving the mysteries of the protagonist, eventually makes his emotions conflict with each other. After the Villain is defeated, Veirin is no longer bound by chains that keep her emotions from growing. Once she gains freedom from the burden that held her down for a decade or so, she eventually changes her mind about not picking a side. Her emotions begin to grow and she starts to let it surface, despite them feeling strange to her since she's not used to it; love grows and her horizon expands...