Hey, sorry for oddly commenting in this post but i just played your VN, I really enjoyed it and I just have to say, even if I don't know you or your friend it is clear that you cherished him so much and I'm oddly enough happy to learn about him even in such small ways.
I'm late by a year now and I'm sure you've found this information already but just in case if you haven't, the artist have active FA and socials.