Ono Yuta, a pathetic loser, failed to enter the same university in Tokyo as his high school sweetheart (Tajima Minori) and was forced to become a ronin. Due to disagreement with his father who wishes for Ono to take over the family restaurant, Ono was forced to find a place to live with only 10000 yen. Through pure luck, he found the rental house Nutopia who was looking for a male only roommate. Little did Ono know that the entire house of Nutopia is filled with nothing but pretty girls (5) ranging from 20 to 30s. Thus begin his life as a ronin surrounded with the most dreadful distraction for a man, especially since his relationship with his girlfriend has yet to end.