A NSFW-themed doujin CG circle. Formerly tagged as i's_(circle). Its artist name is unknown.
Don't confuse them with Seri Haruto's SFW game circle “I's (aizu)”; The two circles have no relation.

Circle name: I's

See also

• Digital distribution site: DLSite.com
• Circle blog: http://b.dlsite.net/RG04660/