I'm a bit lost too, because I don't know if the plot is justified, lol. But I think a little recap of some things that appeared in different chapters might help some of you (and me too—feel free to correct or complement this):
- At the end of season 1, in addition to Juheon discovering that Dohu was using him as an object for his research, his "mother" discovered that they were in a relationship and threatened him using Dohu. So, Juheon distances himself, afraid of what could happen to Dohu (and because he was already hurt). This is also shown when Dohu and Juheon's mother almost meet in his apartment, and he gets really worried that she might have recognized him.
- Juheon's main plan is to get revenge on his family. Since his mom fled to get married to a man with no status, and everything went wrong, she couldn't stand the situation and abandoned him. Then, his aunt adopted him, but just because she was interested in his inheritance, since he's the only grandchild in the family (I don't know if she's infertile). She tried to act like she loved him, but has always tried to mold him in a way that would benefit her in front of his grandfather. And both of them mistreated Juheon at some point.
- The private detective who is helping Juheon seems to be a relative of the old lady with whom he was hiding after he fled from his family and Dohu. At some point, his mother discovered where he was and destroyed the grandma's house. So, I think that both of them are seeking revenge at this point.
- In the end, Juheon has trauma since he was abandoned by his mother and was never loved but used by his family, so he's afraid that this bad experience could happen again with Dohu.
I'm a bit lost too, because I don't know if the plot is justified, lol.
But I think a little recap of some things that appeared in different chapters might help some of you (and me too—feel free to correct or complement this):
- At the end of season 1, in addition to Juheon discovering that Dohu was using him as an object for his research, his "mother" discovered that they were in a relationship and threatened him using Dohu. So, Juheon distances himself, afraid of what could happen to Dohu (and because he was already hurt). This is also shown when Dohu and Juheon's mother almost meet in his apartment, and he gets really worried that she might have recognized him.
- Juheon's main plan is to get revenge on his family. Since his mom fled to get married to a man with no status, and everything went wrong, she couldn't stand the situation and abandoned him. Then, his aunt adopted him, but just because she was interested in his inheritance, since he's the only grandchild in the family (I don't know if she's infertile). She tried to act like she loved him, but has always tried to mold him in a way that would benefit her in front of his grandfather. And both of them mistreated Juheon at some point.
- The private detective who is helping Juheon seems to be a relative of the old lady with whom he was hiding after he fled from his family and Dohu. At some point, his mother discovered where he was and destroyed the grandma's house. So, I think that both of them are seeking revenge at this point.
- In the end, Juheon has trauma since he was abandoned by his mother and was never loved but used by his family, so he's afraid that this bad experience could happen again with Dohu.