Want to re read this manga i forgot the name though, it's about a girl who falls in love with her upstairs neighbor, who acts "cute and sweet", she thinks their "dating", but one day she over hears that her "boyfriend" is also having sex with other girls, she confronts him, but he starts laughing and tells her that he was never interested in her or loved her, that his "cute/sweet" act was to get her into bed with him, and he was only interested in the sex. The girl who is heartbroken pretty much knocks him out cold and ties him to her bed. (She basically kidnapped him) The people in the apartment building notice his disappearance but they think he left to live with some girl.
Want to re read this manga i forgot the name though, it's about a girl who falls in love with her upstairs neighbor, who acts "cute and sweet", she thinks their "dating", but one day she over hears that her "boyfriend" is also having sex with other girls, she confronts him, but he starts laughing and tells her that he was never interested in her or loved her, that his "cute/sweet" act was to get her into bed with him, and he was only interested in the sex. The girl who is heartbroken pretty much knocks him out cold and ties him to her bed. (She basically kidnapped him) The people in the apartment building notice his disappearance but they think he left to live with some girl.