In your first auxiliary chapter you mentioned it being atleast 10x stronger (its honestly not that big of a mistake) and thanks for not going the cliche route i really appreciate it :)

LAST PART IS SUGGESTION FOR AUTHOR it's... alright... usually novels without a proper story are the ones that you should go into thinking absolutely nothing and taking a backseat ride while reading, but even though this novel has a elaborate story I would still recommend going into this not thinking too much about it. Reason for this is that some facts just magically change throughout the chapters which makes it annoying. ill give two examples of such that I can think of off the top of my head. 1. the mc's spells were said to be 10x stronger than other people of the same rank, which changed throughout the story to 2x, 5x, 3x, and I think also 8x. This later got explained a little but it still didn't make any sense. 2. its a harem of course (which I like don't get me wrong) but the narrative is set so that we read along with the mc's thoughts and every time some romance or embarrassing thing happens the mc THINKS to himself something like "what did she mean by that.. I'll have to ask her later" so those should be his honest thoughts but later on the author completely changes that to "I've known the girls had feelings for me but didn't want to show it" which makes no sense since we, the readers, should be the ones knowing how he in particular really feels throughout the story. in conclusion even though it has its mistakes, it is still a fun light-hearted read. the reason I'm rating it high is simply because I like op mc and harem. and a little idea for the author: as I said I really like harem but I also liked the 'cutting ties with girls' and so this was my IDEA (it is still your novel after all) while reading this: don't go the cliche route of "I'm sorry, you girls were right I should not have abandoned you, I should have considered your feelings and everything you have done for me" you could make the story like this: after the Shenzhen destruction arc, mc builds ANOTHER HAREM, in Shanghai or wherever he goes next, and then he goes to the lands of elves and... you guessed it... simply put I think he made the right choice of leaving the girls like it makes perfect sense, unless the girls train really hard and are then like "we are almost equal to you so we will accompany you if you like it or not" But uhhh yeah.. please don't go the "you girls were right all along path" it cliche and dumb IN MY OPINION