Which hentai is this GIF from ?

[akimikage]

http://www.akiba-online.com/attachment.php?attachmentid=49765&d=1382954306

I've seen this in a thread somewhere and I've searched anidb for the title but I can't find the characters or the title. Please help me identify it ^.^

 

[Electromog]

As far as I can tell, it's a character called Chop from some game called "Chakku Tsuiteru".

 

[akimikage]

Eh? thanks. I thought it's from a hentai anime. That was unfortunate