Lovely Baby

summary from manga abyss : my name is kohinata an. my parents went overseas to work and left me to live with my grandma. however, she was hospitalized all of a sudden, leaving me as the manager of her lodging house! furthermore, there are three cool guys lodging there! ba-dump. ba-dump. but one of these three guys, ryuu-kun, seems to hate me for some reason… what for–?!