He appears as a young boy, however he is really much older; He has been watching over Sakurashin for over 200 years and is the District Mayor. In episode 7 of the anime, he claims he fancies Rin. He seems to be something of a womanizer, as in the same episode, he is told on many occasions that he is only to look at the women of the festival by Mariabelle and Yae. His hobby is making Mariabelle cosplay for him.

In a town where humans and demons co-exist, it takes more than a normal police force to maintain the peace. Enter the Hiizumi Life Counseling Office, a fantastic foursome of unique teenagers, each gifted with an amazing super power!

When demons walk the streets, the cops need to recruit more demons! 
In a town where humans and demons co-exist, it takes more than a normal police force to maintain the peace. Enter the Hiizumi Life Counseling Office, a fantastic foursome of unique teenagers, each gifted with an amazing super power! Since it sometimes takes real demon-fire to fight demon fire, the first three quarters of the team aren't exactly human: Ao, a cat-eared telepath; Kotoha, a half-human conjuror; and Hime, descended from a dragon (and the town's acting mayor), all of whom also happen to be delightfully female. 
Rounding out the group is the token male and human, Akina, the office director and "Oyakume," capable of banishing spirits permanently (and from their point of view quite fatally) via a process called tuning. They may not look as impressive as some other superhero teams, and they certainly don't have the most dynamic name ever, but come hell hounds or high water, but they will defend their city! 
(Source: RightStuf)

SUPERTEENS! Hime is a super-heroine. Ao can read minds. Kotoha can conjure up anything with the right word. And Akina . . . well, he’s just a regular guy, surrounded by three super-girls! Together, they protect the town of Sakurashin. But that’s not easy, as the town faces demon dogs and other supernatural threats! 
(Source: Kodansha US)

An OVA based on the Hoshi no Umi arc of the manga spanning chapters 26-34. 
 
This arc focuses on Rin Azuma, a Jiang-Shi yokai resident of Sakurashin adjusting to her new life in the city and working for a ramen shop. One day her former friend Zakuro Kurumaki invades Sakurashin to capture Rin and convince her to join her in destroying the city with the other yokai hunters as well as Enjin Hiizumi, the main antagonist of the series. Akina Hiizumi and the other members of the Hiizumi Life Counseling Office take action to save Rin, 'tune' the yokai controlling Zakuro and protect the city.
 
(Source: Anime News Network)

Yuuhi Shinatsuhiko