I’m late to the topic I think. Anyways he already did have a name. Don’t you remember? It was Okyakusama. It’s a very nice name if you ask me. Like really, the meaning of his name just gels so well with the story of the VN you don’t even notice he has a name. I understand your mistake, I didn’t know he had a name either, but when I reread the VN a few days ago, I noticed it was there right in front of me the entire time. I thought to myself, “How could I be so stupid to miss that?” Long story short, his name isn’t Kuzuya, it’s Okyakusama.