Kakeru is the main character of both Saru Get Chu ~On Air~ and the sequel Saru Get Chu ~On Air~ 2nd. Kakeru is a 10 year old kid with a lot of spunk and determination. Kakeru is a friend and rival with Hiroki. Kakeru also has a love relationship with Haruka, which he always blushes, when he encouters her. 

An evil monkey, Specter, has escaped a circus, using a mind-controlling device which allows him to become smarter and have access to controlling the monkeys. Kakeru is called over by a professor in order to capture all the monkeys, including the one's who's controlling them: Specter.
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(Source: Anime News Network)

She is a member of the Tokyo Actor's Consumer's Cooperative Society.