Patricia and Isabel O'Sullivan arrives at the St. Claire, a college for girls, to study and live in the new home. In there place, they meet to Alison, Wella, Catherine and Doris, who live too in the St. Claire, and join with their in the team spirit. All together, the girls play games and fun long time, living in harmony until appears Winfred, a sulky rude and antisocial girl that no will doubt in to create all kind of troubles for the O'Sullivan twins and their friends...
The Mischevious Twins is finished and has 26 Episodes. It is also Known as: おちゃめな双子 -クレア学院物語-, Ochame-na Futago, Mischevious Twins: Story of Clare Academy, The Twins at St. Clare's, Hanni & Nanni
Genres: Earth, United Kingdom, Comedy, Europe, All Girls School, Past, School Life, Historical, Slice of Life, Kids
Top Anime Like Ochame na Futago: Claire Gakuin Monogatari
3. Maria-sama ga Miteru

When Yumi Fukuzawa entered the Lillian Girls' Academy, a prestigious all-girls Catholic school in Tokyo, she never imagined she would catch the eye of beautiful and demure Sachiko Ogasawara, one of the school's most popular students. Now Sachiko has offered to be Yumi's soeur, her "sister" and guide for all her years at the academy. The whole idea has Yumi completely flustered—after all, they hardly know each other!
The entire campus is abuzz with rumors about the two of them, but Yumi is conflicted over accepting Sachiko's offer. While she admires Sachiko, being her soeur would also mean constantly being at the center of the entire school's attention!
Maria Watches Over Us is finished and has 13 Episodes. It is also Known as: マリア様がみてる, MariMite, La Vierge Marie Vous Regarde, The Virgin Mary is Watching You
2. Watashi to Watashi: Futari no Lotte

Outspoken Luise and shy Lotte meet at summer camp and realize they are identical twins who were separated at birth by their divorced parents. The girls become friends and decide to switch places with each other so that they can each learn about the parent they never knew, and perhaps bring together their broken family.
The Two Lottes is finished and has 29 Episodes. It is also Known as: わたしとわたし~ふたりのロッテ, I and Myself: The Two Lottes, The Parent Trap
1. Candy Boy: Nonchalant Talk of the Certain Twin Sisters in Daily Life

Twin sisters, Yukino and Kanade Sakurai, room together in the dorms at their high school, enjoying school life with their friends and one another. One day, Sakuya Kamiyama, an underclassman, seeks out Yukino, while Kanade learns from a friend that Sakuya has admired Yukino for a very long time. This innocent revelation sets into motion a chain of events that eventually lead to Yukino expressing her feelings for her sister.
Candy Boy: Nonchalant Talk of the Certain Twin Sisters in Daily Life is finished and has 7 Episodes. It is also Known as: Candy boy -Nonchalant talk of the certain twin sisters in daily life-, CB