Kokken

3 Hearts

Description:
From MangaUpdates:

Thief Jin Tonic seeks the mysterious treasures known as "The Three Hearts". One night a mysterious woman falls from the sky claiming to be an escaped Princess from a sacked castle. As fate would have it, she has one of The Hearts. But is she really who she says she is? And will Jin Tonic let her live to fulfill her mission?

Hoshi ni Memai wo

Synopsis:

After the president of the Astronomy club graduated from high school, Shiose Kanako was appointed as the president. However, no one really takes her seriously, and most of the other female members are only interested in Azumi Seiya, a handsome and popular guy who’s also a member of the Astronomy club. Trying to gain more knowledge about Astronomy so that she could get more people interested in the club, Kanako goes to the rooftop one night, and she’s surprised to find…

Gakuen Joou

Synopsis:
Higashisanjou Ayako is called the queen of Hibarigaoka Academy - she’s smart, beautiful, cool, and practically perfect at everything she does. However, little does everyone know that she has another side to her. One day, Yuzuki Haruka, who everyone calls the king of the academy, finds out Ayako’s secret. Will our queen have a peaceful and perfect life again with her secret in the hands of this little sadistic king?

Non-chan to Watashi

Description:

From Aerandria Scans:
Risa and Takumi are childhood friends, but due to a fight in the past, they stopped talking to each other. Now university students, Takumi is a famous playboy who goes out with a different girl every day, and Risa still regrets not having been able to apologize for what she did six years ago...