He likes her.
I feel like there's more to it than what we originally think. Just considering the fact that the girl pursued the guy for a long time indicates that she is serious( it's just that her past relationships have been sexual, unlike now.) First of all, no person who just want sex would wait for you for 2 years, she also postponed her vlog cause of the guys. At least, that's what I think.
Still, I'm glad of the letter Kei left behind, saying about Kai not being involved and Kei not actually betrayang him but caring for him in his own way. It's what makes Kei different from his other been-friends.
ps. I still love Kai's character, this chapter actually highlights his personality more. That loyalty, tho
Wow, that's so deep and I'm loving it!!!