The Days I Was Hunted Across Three Thousand Worlds

[A note I think I need to put up front] Some of the academy setting in this story is inspired by My Hero Academia. On 2020/2/3, the manga's author was exposed for an anti-China incident that showed a disregard for human life. Search Weibo for details. A suggestion from the author: Dear readers, don't buy this story. Just consider me young, ignorant, and blind back then. To become an excellent pharmacist, eighteen-year-old Shen Shutong heads to Kyoto to take the entrance exam for the Federal Military Academy. His mental strength is measured at EX grade, revealing a once-in-a-million-years, ultimate freak of a talent. Witch plane: Those with EX mental strength can live forever! Don't you want to learn more, dear readers? :) From then on, the protagonist lives a life of being hunted across dimensions day after day by vampires, tentacle monsters, dogs, underclassmen, brains (?), and other unidentified creatures. The demon gentleman, reputed to be the strongest, comes to watch the show, but takes an immediate interest in this human. He plans to give him plenty of fertilizer and nurture him carefully, letting this young, unripe fruit mature in good health. Then he will tear him apart with his own hands and slowly enjoy that beautiful soul all to himself. Theme: