
Shinru wants to kill Tae because if Tae isn't with him, then he won't be with Ilay either. But also because he hates Ilay. He doesn't want Ilay to win; he wants to see him desperate. So Shinru also sees Tae as a weakness for Ilay
Another thing is that Tae, as we'll see later, continues to suffer attacks on his person (from Ilay's enemies).
Here we see one of the differences between Shinru and Ilay. Ilay could never hurt Tae, no matter what he says. Ilay can't; he has nightmares about losing control and hurting Tae.
No, Tae told Ilay about it. In one of the attacks Tae suffered and Ilay ended up injured... Tae realized, upon looking at Ilay's wounds, that they were the result of always protecting Tae. At that moment, Tae told Ilay that. Without caring, rather angry, Ilay responded and killed the guy who was holding a knife to Tae's neck. Tae hates it when Ilay hurts himself for him. Ilay feels a horrible feeling when Tae gets hurt (said by Ilay) hahaha ╮( ̄▽ ̄)╭

Not so much... at least Ilay and Tae. These people's mentality is very simple. Ilay's is: Tae should never leave him, feel comfortable around him, and have an unbreakable relationship (like Tae and him uncle).
Tae: Live life peacefully. ...
The problem is Shrinru: In the novel, he proved to be a spoiled brat. He acted as if he lost a game for the first time (Tae) and was very humiliated by Ilay, so much so that he became emo.
Gable: In the novel, he was like a healer. He took care of Shrinru from beginning to end. He saw him as a very long-suffering person who could live his life better. But as a spin body, Shrinru rejected everything... Does the relationship improve? Yes, they both come to an agreement.
Ilay got really angry when Shinru said he wanted to kill Tae... Tae is her Achilles heel for many people, but for Ilay: having Tae is the reason why they should fear her. This was said by Ilay.