Ebichu

A sex comedy featuring a hamster named エビちゅ (Ebichu) that loves cheese, ice cream, and is severely beaten by her owner.
ご主人ちゃま (Office Lady) is Ebichu’s owner.
She is 25, the oldest Japanese say to get a boyfriend. Her boyfriend is かいしょなち (Kaishonachi). かいしょなち(Kaishonachi) is OL’s boyfriend who constantly cheats on her.

This anime is made by GAINAX.
This anime was originally a manga with over 1,000,000 copies sold!

I bought the Ebichu manga and anime on DVD.