Responses
My guess is that he feels certain attraction towards the uke, so he's mad and in order for whatever is going on in his head to disappear killing uke is the only option for the tyrant like him.
Here's the link to the raws, in next chapter we'll maybe see exact reason
https://newtoki332.com/webtoon/36664185?stx=%ED%86%A1%EC%8B%A0&toon=BL%2FGL
can anyone explain/spoil ch 12? why was he about to shoot the uke