Jeremy and the prince are not friends per se. Jeremy treats him like a royal and kind of a childhood friend/rival, while the Prince has this obsession of 'stealing parents'. He stole the favor of the other couple, ughhh the ML's dad and mum... forgot their last names. Shuli looks like Prince's mum, and he's dorecting his twisted affection towards her, which is a mix of love for his parent and desire for a woman he is attracted to... nasty, ew. The guy in the hood is 1000% the shitty priest guy woth dead eyes, since he dislikes Crown prince getting close to Shuli. I've seen in the raws that Shuli will remember some documents to help her release Jeremy from prison, but not sure what it is (can't understand hangul/Korean)