https://twitter.com/AoinHatsu/media?lang=en

Pixiv(s):

https://www.pixiv.net/en/users/617289
https://www.pixiv.net/en/users/537853

ArtStation:

https://www.artstation.com/aoin

Support:

https://gumroad.com/aoinhatsu
https://www.fanbox.cc/@aoin-riku

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History / oldest works:

https://e-hentai.org/g/2534328/0c596a8c27/
https://e-hentai.org/tag/artist:aoin?prev=1