Kokoro Connect ~ The OVAs

The five members of the Cultural Research Club - Taichi Yaegashi, Iori Nagase, Himeko Inaba, Yui Kiriyama, and Yoshifumi Aoki - encounter a bizarre phenomenon one day when Aoki and Yui switch bodies without warning. The same begins to happen to the other club members, throwing their daily lives into disarray. At first the five students find some amusement amidst the confusion, but this unwarranted connection also exposes the painful scars hidden within their hearts. As their calm lives are shattered, the relationships between the five students also begin to change...

Originally an April's Fool in 2007, this one episode OVA is a spin-off of the School Days game by 0verflow, and shows Kokoro Katsura, the little sister of one of the main characters, from her other side. A mahou shoujo out to save the world, or something like that.

In a rainy spring day, first year high schooler Midori Saezima saw a tall, handsome fellow student took care of a stray kitten. Without knowing the boy's name, she fell in love with him at the first sight. Due to sickness, Midori returned to school three days after summer vacation -- only to find out that she was "volunteered" as a candidate for student council. After a series of embarrassing accidents, both she and the mysterious boy she had a crush on, Akira Sudo, were elected as members of the student council. Being the first student council of this newly established high school, they are about to create "new traditions" for their school and a bittersweet love story for themselves...

Seto Ichitaka has a crush on Yoshizuki Iori, a girl in his class who has become so popular she now has her own fan club at school. But only a miracle could make him be with her, since the day he first saw Iori-chan, Ichitaka has been too shy to even talk to her. This miracle happened and now he and Iori are working together on the Freshmen Welcoming Party. It seems that things start to look bright for Seto, but then a special childhood friend is coming for a visit...