Have you read the BEST new-gen DARK FANTASY, SWORD ACTION SHOUNEN MANGA of the 2020s, the peak of human literature, Kagurabachi? If you're looking for a story with a more slow-burning pacing and world-building, but masterfully-written plot, realistically written and interesting characters with great designs, GORGEOUS ART that evolves with each new chapter, MOVIE-LIKE fighting choreography, BEAUTIFUL panelling and composition and NO ROMANCE, ZERO FANSERVICE AND ABSOLUTELY NO SEXUALISATION, ESPECIALLY OF IT'S FEMALE CAST!! OH ALSO IMPORTANT MENTION; DON'T DROP THIS AT CHAPTER 58 (IYKYK), TRUST THE PROCESS OF HOKAZONO-SENSEI'S GENIUS!! GO READ IT NOW!!!
https://www.mangago.me/read-manga/kagurabachi/ (PEAK FICTION)
Also these other shounen/seinen action mangas are great, too:
https://www.mangago.me/read-manga/gokurakugai/
https://www.mangago.me/read-manga/windbreaker/
https://www.mangago.me/read-manga/tokyo_aliens/
https://www.mangago.me/read-manga/gachiakuta/
https://www.mangago.me/read-manga/galaxias/
https://www.mangago.me/read-manga/ghost_fixers/
https://www.mangago.me/read-manga/centuria/
https://www.mangago.me/read-manga/psycho_eyes/
https://www.mangago.me/read-manga/witchriv/
https://www.mangago.me/read-manga/chainsaw_man/
https://www.mangago.me/read-manga/madan_no_ichi/
https://www.mangago.me/read-manga/tongari_boushi_no_atelier/
https://www.mangago.me/read-manga/night_light_hounds/
https://www.mangago.me/read-manga/magical_girl_and_narco_wars/
https://www.mangago.me/read-manga/the_marshal_king/
https://www.mangago.me/read-manga/kai_hen_wizards/
https://www.mangago.me/read-manga/ruby_on_the_cake_hitogui_majo_no_bansankai/
I don't know any isekais though tbh, sorry.
Thanks. I am going to read them one by one.
@Misanthropical
I think I read about everything webtoon action related. I need a good Manga. Action, isekai, or something world build.
I read cheat magic swordsman and isekai, I really need to reread that time I got reincarnated into a smile. By the grace of God, read it. A few... others please help.
I am rambling ignore me.
I might need to take a break from mangas and webtoons. I read so much but every real book I picked up Is Percy Jackson, christen feehan books which are not good for the brain. I love Shakespeare books so I read them from time to time