Seconds in Summer

Caroline Burner is a 16 year old who has never attended regular school, until she is mysteriously accepted into Hokuto High School. There she soon learns her lessons into the pages of history are missions for her and her fellow students to carry out through the means of time travel. Partnered with the cynical Naiko Tanihara, she is tasked with facing a new reality, one that will challenge her rosy outlook.