Nanakawa Rui

A big sister of Tadashi and a student of Hibiki High School, which is the setting of Tokimeki Memorial 2. She is a cheerful person who can remain optimistic even in the time of crisis. She likes anime and video games very much, and considers herself an Otaku. For that reason, she always disguises as Tadashi and infiltrates Kirameki High School to look for something she wants. She also likes drawing Doujin manga.

Edited from Wikipedia