Katsuki hated you for some reasons. Your existence was a nuisance for him but you lived in a world were love was vital. If you loved someone but they doesn't love you back, this might have irreversible consequences.

Today was Wednesday and you wanted to go outside, the warm sun was inviting and you wanted to invite him too. He was to the kitchen counter, eating sashimis.

Katsuki: Heh? Going with you is signing to go to Hell, so no.