Nogami

Nogami has worked as Sengoku Ichiru's assistant ever since her time in CIRS' Special Medical Division, and she continues to uphold that role at Mihama Academy.

While brilliant, she also possesses several personal faults that get in the way of her day-to-day life. Case in point: the fact that her room is always such a total mess. Haruto thinks of her as a sort of surrogate older sister, turning to her first whenever he has issues that he's reluctant to discuss with Principal Sengoku.

(Source: Official site)