Ancheol will probably make a better comeback because he gained weight this early. Just more muscles to develop. I can even see him become a weight-loss instructor
I enjoyed the ending, and as @undeed said, Thank you man...: y'know, after thinking about the weirdness of this series, I'd headcanon that this universe is adjacent to Under Ninja, probably even the prequel
I really enjoy Kahz's oath of ignorance, cause if you break it down, it's just promising to sticking to the shounen MC sense of justice, just made more mature, and Kahz is aware that he's doing it on purpose