
The idea that all of this is going livestream on TV makes me shiver. People may not understand what's going on, since I bet they're so quick in their movement that everything is confused, especially since there's not much light in the cave, but the MC's power is obvious. He's going to practically solo complete an S+ dungeon, how can people not see this?
He's going to be bothered even more than before because of his skills but this could be useful if his father get to know that he's alive.

Please, make it so that Yulan's the one and not that prince. Let Maryjun be next to him and not Vio, he and Marin are clearly the only ones that understand her.
Please, let the best friend be the ML for just a time. When he was speaking with Mira about Vio's feelings I was happy to see such a good person...
I don't think Vio'll choose the prince (what's with his name, in my country that's the female version of Claudio, lol, not exactly fitting for a male but it sounds different somehow), she clearly doesn't want to be involved with him and never loved him. I believe she was just happy about the tea, since she carries a good memory about it. Also, she was worried about Yulan all the time... She can't suddenly feel attraction toward a person who's paying attention to her just now after being chased all the time "because now she's interesting", which is unbelievable per se, alongside that vice-president. Don't treat Vio like a mere woman, that's why concubines are normal in your society, and it shouldn't be!
Your plan has so many holes, from reaching out to Leslie which is a Salvatore now to thinking that the shadows are going to be your allies.