From the ch. I've read Sae-In is a soft sweet person but his upbringing made him vulnerable and weak. JaeKyung took advantage of his innocence and made him dependend on him. . . . . .
. . . . . . . . . . . . .raped him and fooled him into thinking. It's his lover
What the uke did in the past cheating still wrong but...
Since that Jaekyung soul died instead of Injun and his soul went to Jaekyung and fix everything, also with happy ending
and the baby looks like the soul of Injun... Injun junior