Akira Tsubaki gets his first girlfriend, Mikoto Urabe, in Mysterious Girlfriend X. And she's a little mysterious. She's got a fetish for eating raw lemons and cutting everything with her panty-scissors. He's got a thing for drinking her drool. Both these weirdos seem to get along until Tsubaki learns Urabe's biggest mystery is she's not a "girl"friend at all!
Despite the title, Soul Eater NOT! is actually Soul Eater. Spring Bird discovers she's a halberd and moves to Death City, Nevada. There she gets caught up in a love triangle between an absent-minded large-breasted girl and an uppity princess who knows royal karate. Soul Eater NOT! is a character study of a young girl discovering her identity and her sexual desires.