Yukari-chan in Love with Love

Middle schooler Nishikata has had it with his classmate Takagi--the chronic teaser who sits nearby. Day in and day out, she comes after him with every sort of trick or prank. Even when he tries to get her back, she's always one step ahead. But rest assured, it's only the beginning. He's not about to give up that easily in this battle of cunning and youth! (Source: Yen Press) *Note: Includes 13 extra chapters.*

Fudatsuki Kenji is known in school for two things: for being a delinquent and for having a sister complex. He constantly follows his sister Kyoko around, fixing her giant ribbon and chasing off any boys who might be interested in her. However, the truth is much stranger than people believe. He actually doesn't have a crush on his sister-- in fact, he likes Hibino, the only girl in class who isn't afraid of him. The problem is that his sister is literally a monster. She's a jiangshi (vampire), who is much stronger than an ordinary person and who needs a certain amount of blood from Kenji each day. Her ribbon keeps her in check, but if it comes off, she instinctively attacks the nearest person. Her ribbon also has a huge affect on her personality. With the ribbon, she's irritable and sharp-tempered, but without it, she's extremely sweet and apologetic (while she attacks). Will Kenji be able to keep his sister from hurting anyone, and maybe find some way to overcome his sister-complex reputation enough to have a chance with Hibino? (Source: Manga Helpers)

The main characters are three school girls and the stories revolve mostly around their talks and what they do in life general. Art is simple and clean. The background is usually something "non existence." Comedy comes from the girls different personalities and ways to adapt into situations in life. Mina is the active and usually starts things. Yukari is the class rep and usually follows Mina's lead. Sanae is a member of the Track club and most inactive part of the group. She prefers to stay cool and act rationally. *Note: Includes one bonus chapter.*