I like both.
One thing that I'd point out is less of an art feedback and more of a feature feedback.
Rin's skirt could be a little longer. I'll elaborate on this below.
A really hot, yet rarely observed feature with corruption games (NTR or otherwise) is the affect of corruption on clothing. Some games, take it to the extreme and just go modest -> slut clothing. Some (especially the Japs) stop at giving the heroine leopard underwear. The ideal way to do this was something I saw in Shimobashira Workshop's games where the existing clothing has variations at different corruption levels.
In this scenario, it'd be something like -
1. No corruption, normal school uniform (longer skirt and socks than what you have)
2. Low corruption, shirt button slightly open revealing cleavage.
3. Medium corruption, shorter skirt and shorter socks.
4. High corruption, no undergarments making the nipples be lightly visible through the shirt.
This is just a suggestion, I recognize that there's a lot of complexity involved with something like this. So, I'd understand if it's not possible to implement.