
can someone explain to me why the top being bullied is the bottom’s fault and why the top hated the bottom at the start of the manwha?

The top being bullied was the bottom's fault because he spread the rumours in their class and, if I'm not wrong, the top hated the bottom because he knew about the bottom spreading the rumours back in high school and thought he (bottom) had just forgotten about and left him (top) in spite of what he'd done, and so seeked revenge.
I hope it's kind of understandable ( ̄∇ ̄")
FUCKING KNEW IT + are we sure the author saw a dick before? that seems a little bit (little little) too big
why not