I don't know how true this is because I only heard it from a couple of TikTok comments but apparently, it might be confirmed that he has a gothic style, and people call him redacted when he is in that style. Apparently, we will see him in that style on day 7 but I'm not sure how true this all is considering I only heard it from a few and not the actual creator.
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I know this is a pretty random reply because it's been almost a month but after stalking 14 days with you Tumblr page randomly (because I was wondering when the full game or day 5 might be released lol but I also just wanted to learn more about ren) I finally found out whether if we actually see him as redacted/gothic style on day 7 and apparently it's true. Here's the specific Tumblr post I found that out.
https://www.tumblr.com/14dayswithyou/743325837556842496/10-may-2022-please-tell-...
if the link doesn't work let me know and I'll just copy and paste the text in the post here.