Welcome To Night Raven

Blossom Hitomawa was on her way home from school and a strange cat ran into her.

In the process, she gets kidnapped along with the cat.

Waking up, she finds herself in a strange world.

An all boys school by the name of Night Raven.

The Headmaster, punishing her three kidnappers, allows her to stay in an abandoned dormitory with her three kidnappers, who seem to be an unlikely bunch.