Maki Harukawa

A girl whose SHSL talent was recognized while she was helping out at an orphanage that raised her at the same time. Because she's good at taking care of others and despite not being very sociable, children love her. She's good at caregiving, but she doesn't even like children, so why do kids like her?

Maki has a cute face but isn't friendly, and because she dislikes people, she's pretty uncooperative. Because she doesn't say much, she's the type to state things clearly. She isn't the type to assertively act on her own, but she's got guts.

She is later revealed to be the Ultimate Assassin.
(Source: VNDB)