Yukimura Keiko

Keiko is a childhood friend of Yuusuke's. When we start out the story she is one of the few people willing to stand up to him. They are very close, and it becomes obvious after the first few episodes that the relationship between Keiko and Yuusuke is a bit more warm than friendship.

Keiko is responsible for bringing Yuusuke back to life (even though she was almost too late to breath him back to life) She is also close friends with Botan.

Keiko doesn't really have "techniques" per say however: She has a slap that can knock Yuusuke flat so it must have some serious power behind it. She has done her fair shair of kicking bad guy butt. She can scream like the dickens. She's immensley smart. Top of her class, class president, you get the idea.