Can someone recommend me a really good underrated isekai, where there is no fan service, n...

yakuza reincarnation is one of my top manga!!

i also need this too so ill camping here

https://www.mangago.me/read-manga/the_dark_magician_transmigrates_after_66666_years/

https://www.mangago.me/read-manga/jiisama_ga_iku/
https://www.mangago.me/read-manga/dungeon_nursery/
https://www.mangago.me/read-manga/little_girl_x_scoop_x_evil_eye/

Hope you enjoy dear!

Be sure to click on the blue + to see the other link too