Onii-chan is Done For, Onimai: I'm Now Your Sister!, Mahiro Oyama / ぽっちゃりまひろ - pixiv

I got Momiji for May. Who did you get?

Mahiro-Maxine "Max" Oyama

Mihari-Eva Oyama

Kaede-Christen Hozuki

Momiji-Samantha "Sam" Hozuki

Miyo-Lily Murosaki

Asahi-Alex Oka

Nayuta-Natalia Tenkawa

Why does Mahiro look like Taiga from Toradora and Mihari looks like Kanao from Demon Slayer?

???