There's an orphanage which trains its charges to be weapons of war, assassins specialized in magic. At this "school" Shiina has been having a difficult time coping with her roommate's death. She completely ignores rumours, including that of a supposedly impervious student by the name of "Mimi," who is thought to be even stronger than the teachers and isn't part of any group. While taking a breather, she encounters an overly cheerful young girl covered in blood, a they chat for a while before the child is hauled away by the school nurse. Shiina thought that they wouldn't meet again, but the next day, the girl transfers into her class and cheerfully introduces herself as Mimi.

From Hoshikuzuu Scans: In this country, there exists a god called the “batsu”. And a surreal and beautiful batsu called Rei is the master of a servant called Theo. Their roles were passed down from generations in their family, but their relationship gradually turns to love as Theo’s desire to stay together grow stronger day by day. When he feels the warmth of Rei’s body, he feels comfort. However, batsu age several times faster than normal humans, and Theo will also eventually outlive Rei.

Four original glittering love stories set in different themes and genres.