Honestly don't see the appeal in these stories.
There is no real tension ever.
Bad thing happens
Protagonist beats it effortlessly, the only "tension" is his fear of rejection but any reader of this manga with a lick of sense understands this rejection will never happen
Protagonist is at the age of 4 already stronger than arch-mages who have spent their entire life studying magic
So exciting.
This is like reading a Superman story, except there is no kryptonite. Why should I care what happens to a character who has only 1 flaw, which dragging himself down, despite being supported by his grandfather and constantly by friends. He reminds me more of a robot that has certain "principles", rather than being a believable human.
"I want to be liked by everyone, if 1 person dislikes me everything is ruined."