The original artist is https://www.pixiv.net/en/users/797003. I tried subscribing to his fanbox for the full hd, uncut and extra images but pixiv won't let me. So, if anyone can, please upload his works, I would really appreciate it.
@IGnacho No, he hasn't done any continuation of Evil Issei's story. It's been nothing but random swimsuit/lingerie shots, and everything you have here is basically what's on the fanbox but cropped/zoomed in more.