FYI in the untranslated top right panel of page 14, Kuro says "Kouiu ga suki nano?" which means "Do you like this?" and Nia responds with the SFX "koku koku" which is a subtle nod to Nia's desire of Kuro's cock (koku).
he's so messed up
Good thing he's free now and I hope he's happy.
Kuro has lots works to do. Children's habits usually hard to fixed unless something to be done.