This is the second Bernkastel CG set that Yato Hikaru made (the first is currently available with censorship on his Pixiv: https://www.pixiv.net/en/artworks/115301606 and will be uploaded another time) and is titled "Secret Illustration #27".

It's my first time uploading a set from this artist and I must say it was a huge pain. Because the illustrations provided were only a few and censored, I took the time to recreate everything from the PSD file. You could probably make more variants by combining some expressions, but this is the best I could do for now. If you like to play with layers, I recommend getting the PSD itself.

Anyway, enjoy!