Absolute PEAK must-read masterpieces that will stay with you forever

List of all my absolute favourite manga/manhwa from all genres that I've personally rated 9 or 10 with top-tier plot, characterisation, pacing, tone, relationship dynamics, and world-building. Ranked by my rating (10s first), alphabetically. Number 1-21 are 10s, 26 onwards are 9s. The list is ongoing!
Check out my other lists here („• ᴗ •„)

ALSO! You can find these on Webtoon (better translations + more chapters):
My In-laws are Obsessed With Me
Sister, In This Life, I’ve Become The Queen
Ghostly Song
For My Lost Love