Mahiro Oyama

Mahiro Oyama is the protagonist of the anime series 'Onimai: I'm Now Your Sister!'. Mahiro Oyama was originally a male shut-in gamer who mysteriously transformed into a middle school girl due to an experimental drug created by Mahiro Oyama's scientist sister, Mihari. Mahiro Oyama struggles to adapt to life as a girl while maintaining the memories and experiences of being male. Mahiro Oyama has a complex relationship with Mihari, mixing feelings of frustration over the transformation with deep sibling bonds. Mahiro Oyama shows a keen interest in gaming and often uses this hobby as a coping mechanism. Mahiro Oyama develops new friendships with classmates Kaoru Momose and Asahi Kaoru, who help with the adjustment to feminine life. Mahiro Oyama maintains a tsundere-like personality, often acting tough while hiding inner vulnerability.