I don't think he is around anymore. I think I read a comment saying he'd go on a break due to personal issues back in 2009.

i feel old reading this stuff even though i hardly knew about touhou back in 2006

Surprisingly, this artist is still active - they last posted on their Pixiv in October 2019, though it was just a repost of an old comic: https://www.pixiv.net/en/artworks/77417911