Video Girl Ai

When Yohta is told by the girl he likes, Moemi, that she likes someone else, he rents a video girl tape from a strange video rental shop. When he plays the tape at home, Video Girl Ai emerges from the screen to help him win Moemi's love. But Yohta's VCR had been malfunctioning and now Ai's personality isn't quite what it was designed to be. (Source: AniDB)

Domestic Girlfriend

Natsuo Fuji has a serious crush on one of his teachers, Hina Tachibana, but since he knows he has zero chance of ever being in a relationship with her, he lets his friends talk him into going to a party where he meets Rui. One thing leads to another and then, well, neither of them is a virgin anymore. Unfortunately, it wasn't what they expected, but that's fine. They're just ships passing in the night and they'll never have to see each other again, right? Except when Natsuo's father announces that he's getting married again, Natsuo discovers that he's getting two new step-sisters as well. Now there's a problem, because one is his teacher, Hina, and the other is Rui. (Source: Sentai Filmworks)

DNA²

Junta has a problem: he's deathly allergic to girls! All this changes with the arrival of Karin,​ a gorgeous time-traveler who transforms him into the Mega-Playboy,​ the sauciest girl-magnet around.​ Suddenly,​ Junta's wildest dreams have come true,​ and all the prettiest girls in school have fallen in love with him.​ With so many adoring fans,​ mayhem is sure to follow,​ and Junta finds himself in the center of one hilarious romantic mishap after another.​ (Source: Discotek)

G-on Riders

At Saint Hoshikawa School there is a secret group called the G-On Riders. Students with superior strength and ability are chosen to be in the group, which was formed to fight against alien attacks on the earth. However, many of the problems that the members face are ones amongst themselves, and the same is true for the invaders. And another student at the school, Ichiro, tries desperately to confess his love to Yuki, one of the Riders. (Source: Anime News Network)