Yukimura Keiko

Японское имя:

雪村螢子

Keiko is Yusuke's childhood friend, and later they became a couple. They grew up together
Keiko's usual anime appearance and studied together in the same school since
they were kids. In many ways, Keiko is the opposite of Yusuke. She is sweet, calm, and doesn't use foul language. She is also equally known for her intelligence (she is the class representative of their section) and dependability. As a class representative, she often scolds Yusuke because of his bad student habits like skipping classes and being absent for many times but inside, she really wants to protect him. She and Yusuke are a lot closer than they'd like to be sometimes (i.e. Yusuke groping her etc.), but nonetheless, it is clear that they love each other.

YuYu Hakusho Wiki