I don't think this is Shuten Douji from fate/grand order.

Novack said:

I don't think this is Shuten Douji from fate/grand order.

An older, more adult Shuten Douji perhaps?

112795 said:

An older, more adult Shuten Douji perhaps?

I was looking at the tags on this image on the Pixiv site and did not see it tagged as Shuten Douji, I'm guessing it's an original from the artist.

Novack said:

I don't think this is Shuten Douji from fate/grand order.

ahhh, you're right. It's an illustration to the novel 鬼女転性！-TS快楽堕ちNTR好き男がTS転生した場合-
My bad, I should have check artist's commentary fist.
Thank you for catching that.