Anime Crossover: The Mission to Save the World Is Underway

After a car accident, I transmigrate into another version of myself from a different race in a parallel world. The day before I come of age, just as I’m about to take over my parents’ jobs, my country’s national destiny throws me into an unstable new world to carry out humanitarian relief.

Then I get tricked by a book from that world, and the students I worked so hard to teach end up paying the price.

To save the student who jumped from a building, the Leader Dazai, I need to travel to other crossover worlds and collect regret points for him, meaning thoughts like wishing he were still alive.