Knock 3 Times

Drama Yaoi

One day a boy, who looks like a kitten to some stands, calls at Manato's door and tells him that from today on he'll be his roommate. It isn't long after that Manato "adopts" this boy as his "pet", but this kitty has its own aim. Anyway, while the "kitten" starts suffering under Manato's coldness, he gets more and more in some kind of love quadrangle of the more steamy kind... (from B-U)

Knock Your Heart Out!

Drama Romance Josei

"One day, like an attack, you are caught in a fire of love. It is beautiful and sad at the same time. Once you are captured by the hands of love, there's no way. Your love story might be started at this very moment, ......are you surely all right? Those are love stories of the young middle high school children who are in trouble with love. Who's gonna knock your heart out?" (Source: mangafox.com)

Zerozaki Kishishiki no Ningen Knock

Action Supernatural Seinen

Third in the ranking of the "Assassin Name" families of the underground assassin community, the "Zerozaki Ichizoku" is infamous for their indomitable family unity. Each of its members exhibit combat prowess when it comes to saving one of their kin. Zerozaki Kishishiki is one member of the Zerozaki family, and he utilizes a bat covered in nails to brutally murder his targets. He calls his weapon the "Praise of Folly (Seamless Bias)." His next target was supposed to be an ordinary target, just another day for him. He faces a problem when he discovers that he has become prey to a formidable enemy. (Source: MangaHelpers)

Nemurenu Yoru wa Knock Shite

Romance Shoujo

Meet Tominaga Komaki, a 20-year-old university student and landlady of an apartment. Meet Ichimatsu Kusuto, one of the hottest students from the University of Mikado who strives to avoid his stalker. When Kazuji meets Maki, his new landlady, will sparks fly between the two? (Source: MU)