Here's a link to the artist's Pixiv page where you can find his latest works and contact him for commissions.

https://www.pixiv.net/member.php?id=9067600

You can support the artist on Patreon to have access to his hentai art and to allow him to create more of gorgeous hentai artworks.

https://www.patreon.com/namahage

Also you can supporting them using Fantia.which works like Patreon.
https://fantia.jp/namahage