By greenu,sauce [r18 version inside this link, you are warned]

disclaimer: smoking is bad >:(

制作したイラストの無断利用は禁止しています

My interruption of this sentence is you should not use the artist’s artwork on commercial product/AI training, but reposting is … mostly prohibited. So, better play safe, its my fault that I do not look at the warning on Pixiv.

speed matter