Takashi never graduated from elementary school because of not eating green peppers. He is already 20 years and his fellow classmate Megumi is a new teacher at his school. See how this story unfolds in a comedic way.
Shiina Aki is constantly being treated like a girl due to his feminine looks so he decides to move to Tokyo to attend middle school in an attempt to change himself.
However what awaits him in his new home, Sunohara-sou, is the kind-hearted caretaker, Sunohara Ayaka. Along with the three female members of Aki's new middle school's student council, Yukimoto Yuzu, Yamanashi Sumire & Kazami Yuri.
And so begins Aki's new life in Tokyo living with 4 girls.
Sakuma Yukari decided to start a band on her own after seeing a certain band during the Sakura High School festival, then with her best friend Shimizu Kaede, they want to join the Light Music Club only to discover that in their school there isn't a club like that. With help from Sawabe Maho, they discover there is a Light Music Appreciation Society with only one member, Satou Riko.
After drinking too much at a company party, the serious and shy 30-something Ira Megumi finds herself waking up naked in bed next to a younger coworker, Aoki Shun. What happened with Aoki the previous night? And perhaps more importantly, what does she want to happen with Aoki in the future?
Kokura Hikari is a first-year high school girl who loves rifle shooting. She entered Chidori High School because it had a shooting club, but finds that the club had been disbanded. She had only one day to find enough members to reform the club, but luckily was able to find three other first-year girls who she had met at a competition in middle school.
Thus begins the daily activities of the Chidori High Shooting Club.
Honori joined the suspicious-fun club, the "Substitute Club", which substitutes for people and does their work for them. The members of this handy-man type club are very free-willed and loyal to their desires.
Gotou Hitori is a high school girl who starting learning to playing the guitar because she dreams of being in a band, but she's so shy that she hasn't made a single friend. However, her dream might come true after she meets Ijichi Nijika, a girl who plays drums and is looking for a new guitarist for her band.
When a fiery yankee named Sudou Ayame suddenly confesses her love to Kazami Nagi, he literally can't resist out of fear for his life! Now with their relationship established, Nagi begins to learn that Ayame is more of an innocent maiden than he originally would have thought and subsequently, his own feelings for her may began to blossom too. That is, if he can survive Ayame's rough personality and her overbearing delinquent friends as well!