Haruka,
When you go to your deviation page, you can see on the right hand corner the "Featured in Groups:" section, right? When you hover your mouse over #
Ranger-Kellyn-Fans' icon there, you'll see a pencil icon on the upper right corner. Click on it, and it will give you the option of removing the deviation from this group.
I appreciate your help. ^^ Please remove the deviation ASAP because I think you are the only one who can do it. xD That's a cute picture, by the way. xDD