I checked the author's twitter and the black-haired boy's on the bed with his legs spread so he might be the uke? It could still be seke though!
https://twitter.com/__bell_minta/status/968574717098565632
Ah just in case, if anyone sees this tweet, pls don't talk to them in English since I don't think this story's been officially translated yet so this is still illegal lol...
Another where he's squirming. It's either a really good blow/handjob or...
https://twitter.com/__bell_minta/status/1115930166818037760
Black hair bottoms. It’s the puppy dog seme setup and gap moe delinquent uke.
Who’s the top? I can’t tell lol. I’m hoping that it’s the black haired boy but I think it’d be cute either way. Or seke is yummy too(≧∀≦)