I really enjoyed the VN. The comedy it's at an absolute next level and I loved it. I really got attached to the characters when I was playing their route, so I can't wait for chapter 2.
References that I found: Aidens and Caitlyns(from League of legends) last name and "Everything goes on" music which is published by also Riot.
Anyway, Let me know if I missed more (which is probably).I always love to hear more references.