If you're looking for manga similar to Green Green Thirteen: Erolutions, you might like these titles.
The story is once again set in Seio Girl's School, the location of the first game and its spin offs. A beautiful, silver-haired student named Chihaya Kisakinomiya is transferring into the all-female student body at Seio. The catch is that Chihaya is a boy.
It’s summer vacation and Keiichi’s parents left him with his five younger sisters to go on an overseas trip. Now with their parents far out of the picture, his younger sisters are aggressively making their moves on him. Of course there’s no way he can hold back.
Chihaya is a boy that is looked down because he looks like a girl. Due to that reasons, he isolates himself at home. His mom suggests that he should go to Seiou Academy which is an all girls school. Thus, the story started...
Kaede loses her memory so Rin and friends must help her recover them! Phoenix Wright style! Rin and Kaede's childhood friend, Sakura returns and a new love triangle begins.