Ganbare! Goshujin Sama

Eiri wants a cute cat as a reward from her parent. Her parent get a dog, a Labrador Retriever puppy, for her instead and named that dog "Ken Ken". However Ken Ken behaves very well whenever he is in front of Eiri's parent but he is never nice when he is alone with Eiri. One day, Ken Ken got electric shocked accidentally. He passed out, and woke up with surprising outcome.