Responses

Then spoiler alert.
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It is said that both Kotsu and Hyeol will be alphas and Jeongchan will be the omega( ̄∇ ̄"). Past commenters said that the reason why OG!Hyeol is obsessed with Kostu because he looked like his omega father. You can openly ship them anyway since they said it's pretty much an open ended for the three of them
I know there's a high chance Jeonghan and Hyeol both will turn out to be Alphas but still, sorry Kotsu, I'm shipping them. Kotsu, I hope you be a strong boy and can deal with the heartbreak. :3