The only thing I don't like about this story is, for some reason, all the achievements and hard work of the MC from this story are all given to his teacher and the teacher just accepts it as if it were the right thing, even though this teacher is not his sister, not his girlfriend, only the status of a student teacher when the MC was at school. I think at the end of the story the MC saves the world and all these achievements will be donated to his teacher for everyone to know and remains on the sidelines, happy with his teacher who is praised by many people.
WTF MC
The story is messed up, even though the plot is good. What makes it messed up, in this story, don't be surprised if the MC suddenly meets Superman or Ultraman out of nowhere and the author doesn't tell who they are and they suddenly appear. Second, don't be surprised if the MC is sleeping and suddenly aliens appear to invade the city and the Fire Nation attacks and Thanos comes to kidnap the MC.