https://www.mangago.me/read-manga/the_last_step_on_the_way/
Though short, I personally believe it's pacing ang storytelling are sublime. Read the official if you haven't read this yet and wanna check it out.
Have you read goodbye eri by tatsuki fujimoto (chainsawman author)?
the pacing and paneling of both of these are really good imo:
https://www.mangago.me/read-manga/tonari_ni/
https://www.mangago.me/read-manga/old_fashioned_cupcake/
paljae MOST DEF its so good
https://www.mangago.me/read-manga/saha_lee_uin/
This one is like a greek tragedy. Mind-blowingly good read
Cradle of Imae
Prince Bari, What's with this strange dream?!, The Art of Taming A Tiger, black mirror, there’s more but I don’t remember. Read cradle of imae even if you don’t read the rest. Reply me how it is after reading, I’ll waitヾ(☆▽☆)
Kotaete My Drifter
looking for manwha/manga with beautiful pacing and storytelling. kind of like reunion where it feels like your watching a movie and every moment is drawn out for dramatic impact. any genre