Definitely one of the better (imo best) jumpchains on here. Even someone like myself who knew almost nothing about many of the worlds the MC has visited I still found myself able to follow the story and not get lost. Everything is well written and explained.
I also really like how the harem has been handled in this story. Most harems, nearly all of them infact, that I've read are never really that good, imo. Usually they all seem to suffer the same issues. Mainly turning females characters, regardless of their power or intelligence, into mere tag-ons swooned by the MC's amazing masculinity. Given a brief dedication in the story before quickly being faded off in the background with the other dozen love-struck women that get replaced and forgotten and made irrelevant.
Well, none of that here. Despite being a harem it really doesn't have the same "feel" as one, at least to me. Mainly because the MC is not what I would consider a "playboy". He doesn't go out of his way to flirt with all the famous female characters or try to bag them for his collection. Infact for a long time and in most worlds so far he hasn't added anyone new.
Because of the way the romance has been handled, even if it isn't a big focus, it actually makes it seem like the MC has a real connection with the few that he does have. Currently at the time of reading this there are four women. Though only two are obviously wives with the other two being more like daughters.
Despite this these relationships did not just suddenly "happen" either. There is build up, sometimes going on for years, of friendship or mentorship between the MC and the love interest. This makes the relationship, to me, feel a lot more realistic and stable as opposed to the more typical cases of love-at-first-sight. The women actually have character and aren't just show flowers for the MC to brag about.
Of course the action and gradual build-up to power is also great. It can't be easy to balance out having a MC being "really powerful" but still not completely OP to the point of no match. We watch him and by extension his wives gradually grow and become more and more powerful with each world he goes to. Even after he has become a demi-god with divinity and incredibly power magic it still can show that he has more room to grow and he isn't the most powerful - without also making him feel purposely nerfed for sake of drama.