Toujou Souko attends a Catholic high school for girls and spends most of her days ditching class and trying to hook up with guys. She's in a hurry to fall in love and often gets into trouble. Ueda-sensei is Souko's homeroom teacher and all the girls idolize him on campus. He thinks Souko's a good kid and is looking out for her best interests… Yet he never meant to encourage her to try and seduce him… What begins as a passionate affair becomes a true and undying love… Ai Girl is an angsty love story loaded with melodrama. It should be noted that this series has adult themes and high smut content.

For Anri, age 17, there can be only one–the popular singer SHIN. She'd risk her life to be transformed into a woman by him, and she'd sooner die than knowingly give her virginity to anyone else. After executing a few bold, attention-getting maneuvers, Anri gets what she wants, and then runs off before the man wakes up again. …BUT was the man really SHIN? Anri discovers that there are fake SHINs who try to get women like that, and one incriminating piece of evidence suggests that the man Anri gave her virginity to was not SHIN. Revenge is now a matter of pride, and she's going to make this man pay! But does Anri really have any idea who she's waging war against?