
Honestly, I dont find Hotta bad, cause he told Kashiwagi that he doesnt like him but he's willing to give the relationship a chance. So he never let him on, rather he is understanding of Kashiwagi's moves and tells him honestly when he is uncomfortable about anything which is a sign of good communication between any partners. Sure Hotta does say it feels good but he has never treated Kashiwagi like a show piece, he could have taken him to the party and hogged him to rub it in the girls face but he didnt, rather he feels guilty says I am a bad person for even feeling good. And if u go see the preview for the next chapter by the translation, Hotta clearly calmly asks him the things bothering him about Kashiwagi and how Kashiwagi responds is another story(not gonna say it since it might be a spoiler, go check the preview if you are interested). Anyways I think What Kashiwagi is lacking is just communication. If he just talks it out with Hotta, I think Hotta would calmly work out the best outcome with him. And we can all tell Hotta is falling for him though he hasnt come to understand it fully yet.
Why is everyone just assuming Kashiwagi's feelings are not sincere? '-'
I think Hotta is the one misunderstanding him. I think his feelings for Hotta are genuine he's just afraid of getting hurt because of that other senpai but it's pretty normal.
Hotta, on the other hand, just dates him because the girl he used to like, likes Kashiwagi and that "feels good" as he said a few times already.