
Duamu Xi (white hair) is the seme. The spirit shadow(You Keika) is the uke. People only thought You Keika is the seme because he announced in the extra that he was the seme. But Duamu Xi countered on the next page that only ukes aggressively claim to be seme. You Keika then scolded him asking if Duamu would die if he doesn't say anything (which I assume means he's scolding him for calling him out)

This I'm not sure. Majority wants Keika to be uke.... But reading the raws, the one oozing of uke vibes is Ki(the white haired). And Ki's counter doesn't make a confirmation that Keika is the uke since he could also be lying like other think Keika by claiming his a Seme. Most of the time in the raws Ki was the more uke.

https://nighty-amy.tumblr.com/lingqitranslations
And here's a typeset translation of the chapters if you're interested ( ꈍᴗꈍ)
Just wondering, is it confirmed who's the uke and seme? You Keika (White haired?) feels like the seme to me, but there's rumours saying the author claimed its the opposite.