Mangas

ジグ+ザグ, 青春男子寮, Jigu+Zagu-, Zig Zag (HOSHINO Wakako)
Fujisawa Kazui followed his recently departed grandfather’s will to stay in Seisou Gakuen’s Tsukigase Dormitory. The cowardly Kazui has two roommates- one is Kawasaki Ryouhei, who has a very big secret (!!) and the other is Mario Bertini, who talks in a strange Japanese accent. With these two as roommates, what kind of a school life would Kazui have?!
ジグ+ザグ, 青春男子寮, Jig + Zag, Jig+Zag, Jigu + Zagu, Zig + Zag, Zig Zag, Zig Zag (HOSHINO Wakako)
Fujisawa Kazui followed his recently departed grandfather's will to stay in Seishou Gakuen's Tsukigase Dormitory. The cowardly Kazui has two roommates- one is Kawasaki Ryouhei, who has a very big secret (!!) and the other is Mario Verdini, who talks in a strange Japanese accent. With these two as roommates, what kind of a school life would Kazui have?! 
ヴァーチャル・ビースト -  幻兽少年
Summary from Vampire Knights: Since youth, Shin had a special ability to foresee dangerous situations. When his sister, Nao, was kidnapped by the people from a research center, Shin finally realized that he was not actually human, but a ‘virtual beast’ created in a genetic experiment. To solve the complicated mysteries revolving about himself and save his sister, Shin and his good friend, Tatsuki, embark on a perilous journey.