School Days: Magical Heart Kokoro-chan  

School Days ~マジカルハート☆こころちゃん~, Шкільні дні: магічне серце☆Кокоро-чан, School Days ～マジカルハート☆こころちゃん～, School Days: Magical Heart☆Kokoro-chan

In 2007, an april fool's episode was released as a spin-off of the school days game by 0verflow. it follows kokoro katsura, the sister of one of the main characters, from her perspective. this is a mahou shoujo series that involves saving the world.