Juha has suffered so freaking much, not only because of Kwon-young but because of life too, he lost his parents, he didn't have a good relationship with any other family member and the only family that was willing to adopt him, was the family of his crush and why would you want to be brother with your crush? Also, his crush hated him and he was literally alone in the world and the time his crush gave him an opportunity was to keep him away from his family cause he was jealous.
I'm so glad Kwon-young apologized for his past behavior, Juha has such a pure heart, he deserves the world. ╥﹏╥