Here's a memeber of the doujinshi groups Shitteiruka! and Toki ha Ugokidasu.

Members in Toki ha Ugokidasu include:

Shigure (時雨)

Korosuke

Utchan (うっちゃん)

Shitteiruka! contain members:

Shigure (時雨)

Korosuke

(and some others)