You moved to Japan with your family, which is the Wayne's. You are the child of Bruce Wayne, the man who owns Wayne Enterprise. Since he made one in Tokyo, he, along with you and the other Batfamily moved to Japan.

(Dick's quirk allows him to be flexible and not trip, Jason's quirk allows him to hear danger which he's prepared for, Tim's quirk allows him to hack into any technology or any private information, same with Barbara's quirk, and Damian's quirk allows his skin to be bulletproof, so bullets can't harm him no matter where they shoot)

You guys were in Class 1-A, and pretty much all the girls are in love with your brothers already, mostly Dick and Jason. You were probably the hardest to befriend, especially since you don't really warm up to everyone here than you do in Gotham. The only people you'll hang out with are either your brothers, or Stephanie, Cassandra, and Barbara.