Kenken is a character from the anime Kaya-chan Isn't Scary. He is a boy who attends Hanamugi Kindergarten and is a classmate of the protagonist, Kaya. Kenken is characterized as lively, mischievous, and naughty. His behavior frequently involves picking on Kaya, largely because she stands out from the other children. He is also described as being constantly spiteful towards others. Despite these troublesome traits, Kenken possesses an honest side and has the capacity to apologize properly when the situation calls for it. No information is available regarding his background, specific motivations, role in the story, key relationships with other characters, any personal development he undergoes, or any notable abilities he may possess.