It looks a bit AI-ish but there is step by step on his Twitter.
https://twitter.com/sion_asanagi/status/1613681003910041600/photo/1
https://twitter.com/sion_asanagi/status/1613681003910041600/photo/1
AI has been able to produce step-by-step for several months, however I don't know any that would start with eyes. It's still possible it's an over-draw of an AI image.
I read a few of his tweets and he seems like he's having a hard time with his artwork so I don't think it's AI. Like, I don't think someone talking about how they're not progressing the way they want, struggling with an aspect of a piece, or not having time to finish a piece would be using AI.
Edit: Plus AI "artists" are usually quite vocal and pompous about the fact that something they've made IS AI generated. They want to seem superior to actual artists. This just seems like some guy with little reach making lewd art in his spare time.
Edit 2: Yeah, even his bio on Pixiv says something about "starting from zero" and not being skilled enough yet to take on requests. From what I understand AI generation doesn't take much "skill" or experience so...
Edit: Plus AI "artists" are usually quite vocal and pompous about the fact that something they've made IS AI generated. They want to seem superior to actual artists. This just seems like some guy with little reach making lewd art in his spare time.
Edit 2: Yeah, even his bio on Pixiv says something about "starting from zero" and not being skilled enough yet to take on requests. From what I understand AI generation doesn't take much "skill" or experience so...