Ultra: Start with a Zanpakutō

Shui Yu, a 14-year-old junior high school student. An accident caused him to travel to the Ultra world and awaken his own weapon, Zangetsu. At the same time, his appearance disrupted the original order of the entire Ultra world. Zero: "Why is he so strong despite having exactly the same appearance?" The book begins with the first episode of Membius, and will travel through many Ultra worlds later. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.