Ginza No Koi

This is one of the unsuspecting drama that is pretty fun to watch. Turtoise lives in Ginza (usually gotta be filthy rich to have property there) living in his apartment attached to his Grandma who's pretty controlling and nosy. He likes his best friend but she's dating his Senpai (Santa Maria). One of his coworkers likes him but he doesn't get the message while his granny is also trying to get him married. Its light hearted and Turtoises theme song always kicks in.