INCLUDES (not limited to): systems, op mc, towers, dungeons, reincarnation, time travel/reverse time, school, medical, sports
DOESN'T INCLUDE: cultivation (bc i make another list for it), ROMANCE
Threw a bunch of manhwas that I have read a long time ago till now together in here, so some might not fit the description
HERE'S THE LINK TO PART II OF THIS LIST! PLEASE CHECK IT OUT:
https://www.mangago.me/home/mangalist/2573656/ 
