https://www.pixiv.net/en/users/102203170 "AI-assisted" content. Be aware. At least most images looks okay, only a few are a bit obvious in some points. So, not AI generated. (just in case someone wants to rename the gallery)
"It is AI generated, just because the "artist" makes some manual adjustments doesn't change that." Well, the wiki says otherwise: "It is not applicable if AI was only used as a tool in the process of creating something that does not have the obvious visual appearance of being AI-generated, e.g. if it was painted over." https://ehwiki.org/wiki/ai_generated