Okay but why tf did the author even create a character like the MC this entire story was trash thanks to him. Timid guy has no backbone but GOD THE BLACK HAIRED WAS THE MOST TRASH CHARACTER I'VE EVER SEEN. This story frustrates me to no end.
Only taejoo and the pretty guy's story would have been worth it but the author dropped it so F
I think Suu felt really fuckin cornered, like the repetition of the sentiment "I have no one" in this chapter shows he has no idea what he's doing anything for and I think in that moment even though he really hated the prince, he felt he was the only one left and inspite of hating him, he just clung to that one familiar thing.
I feel like the prince saw it coming too and the concubine made a miscalculation killing Nadan because while she felt Suu would try to avenge him, she didn't account for the dragon and Suu forming a bond.