Not a fucking love triangle, I hope it's not gonna go in that direction. I really liked where this was going with the development, but damn, why'd you have to put in a shitty triangle here.
Why do authors always do this, like the main characters are warming up to each other and somehow a rival appears suddenly or some other drama, it's like shooting yourself in the foot
MC is tactless motherfucker with no manners who lives like a pig, check.
Heroine is a one-dimentional tsundere with less personality than a carboard cutout, check.
Predictable low effort love triangle shoehorned into the story for no real reason, check.