https://www.novelupdates.com/series/the-heros-coffin/ this is plot driven and slowburn but it does have some smut scenes
I don’t know much about Korean bl webnovels but I heard good things about “Turning”
Cn
Boyfriend Always Thinks I’m a Little Pitiful
Does No One Feel Sorry for the Eldest Senior Brother?
What Lies Within
Everyday I Get Up To See The Villain Stealing The Show
On the Necessity of Catching Ghosts with Physics
For Kr dk about shounen ai or not but here are some really good one's:
Turning
Hunter gonna lay low
Follow the sheep in the abyss
Good Life Rankers
The Tiger That Heralds the Dawn
Kill the lights
recently read chaise a la reine, it was super good. heavy politic tho, if that's not your taste
Best bl novel preferably shonen ai with plot I have seen heaven official blessing and the fonder of diabolique i loved the series but couldn't read the novel
Something korean if possible but I accept anything