Hello!! I'm glad you enjoyed it (and thank you for the support!!) ♡ I see that a few kind folks have already answered your questions, but I'll add mine as well for further confirmation =w=
- This question has already been answered below and it's in the FAQ section on Tumblr as well!
- Ren's ring has vaguely been answered on Tumblr too; here and here!
- Not necessarily!! Ren and Angel's childhood will be explained and portrayed via flashback scenes throughout the game ^^