
yes, the ML falls in love with the MC, and actually, it's implied the ML falls for MC first. The ML really does not have the MC's name on his body.
The ML locked himself up in a castle bc he's tired of life and basically wants to disappear. If not for the MC barging into his life, the ML would've given up on it already.

yes, Tristan is the one that falls first. Although Tristan is unable to tell if he feels sympathy, guilty, responsible, or affection for Eden, he starts to uncharacteristically care for him. Even Tristan doesn't know or doesn't want to dig deeper into why he cares so much about Eden. But it is because he goes out of his way to care for Eden and being super considerate that Eden later falls for Tristan.
For example, Tristan made it his number 1 rule to not allowed outsiders into the castle. He doesn't want to have anyone possibly leak his location. However, when he finds out Eden wants to play the piano, he not only goes out to the TOWN to help retrieve the piano, he hires a tuner to come to the castle and fix the piano for Eden. There are multiple instances where Tristan makes tons of exceptions for Eden. In fact, he later asks Eden to move in with him at the castle, but it's Eden that declines. Tristan then moves to London to be with Eden. This is all before either of them confess. And at this point, Eden has yet to admit to himself he's in love with Tristan. He only realizes his own feelings after they're both in London, and at this point, Tristan is well head over heels about Eden.
does ml eventually fall in love with mc and how did he fall in love? does he really not have mc's name in his body? why is ml locking himself up in a castle?