Sunbae is a loser

MC better with a psychopath entity that love and cherish him than to this sunbae whose only capability is gaslighting and never able to take responsibility of his own mistake.

Seriously, what r u shipping in Sunbae quality?
The dude literally a type of guy who asking MC to leave in hide because his friend is coming after he taking pleasure of MC's body. Don't give me the argument like,
"He's straight"
"He isn't responsible for MC's feeling"
Because if you're at least decent, you didn't treated someone like that and just one sidedly believe that person like to have sex because they have feelings for you.
Also, he always find a way to gaslight MC when MC shows reluctant or rejection. Even when he realized he's in the wrong! He can't ever take account of his own mistake.