Not yet in this manhwa, it was revealed later on in the novel so sorry you just read some spoilers lol
Damn... I thought my memory failed me for a bit there
Not said yet anywhere, I think... but just connect the dots, my friend. He apparently hates her and criticizes every little thing that she does/does not.
And yet he keeps imprisoned a caged bird that's exactly like her wavy and colorful hair. Doesn't that look like... obsessive, unresolved feelings to you?
(Just my theory, though).
I agree with all the hate comments (Derrick deserves death, torture and more imo), but where was it mentioned that he had romantic feelings for Penelope? I don't remember seeing that anywhere. Coz if that's the case, my hate for him has increased a few thousand levels man (F**K U DERRICK). Spineless bastard