The thing shin's most afraid is Jake getting killed. Since he's definitely already in love with him from all those hints he said before...wanting to help and be with him wherever he gonna go if thing goes south for jake...Shin's in love and he's afraid of losing Jake knowing how gangster gamble with their lives and others.
I wonder if he will feel relieved or betrayed once he knew the truth about jake
ML need a MAJOR character development to be on the same level as the MC. He should either have been a cute dumb puppy since the beginning or need to have a major plot twist in the future that gives his character more flavor. Easily the blandest ML i read in 2023. Even irdit is far superior like 5 tiers higher.