I’m going to guess that the seme and uke knew each other at least some point in the past...

I’m going to guess that the seme and uke knew each other at least some point in the past (maybe an accidental bump and caught the semes interest?). I feel like the seme is also aware of the ukes childhood trauma since it’s a reappearing occurrence within the story so far. Let’s just pray that the sadistic seme doesn’t pull a KS and end up dusty as well