Azusa Aizawa, a 27 years old woman, died on work site due to overworking. She has the possibility to reincarnate, and so she plans to live a chilling and calm life. But will she be able to be relaxed?

Unhappy with her life, 30-year-old Anita accidentally discovers a way to travel back to age 15. Can she rewrite her own history?

With the earth alliance weakened, Haruo weighs siding with the Exif, whose death cult is summoning a monster that can destroy the world.