Kou is a 22-year-old man who self-proclaims to be part of the 'elite.' He is the first son of the Ichinomiya family, which makes him the heir of the family company. While others of his age are just your regular, everyday college students, he has already bought his own luxurious apartment, and claims to have made over 8 million yen within his short life.  From the day Kou was born, he has been taught not to be indebted to anyone. Therefore, his whole life has been obsessed by it. From wearing the necktie that bears his family's 'motto', to coming up with scenarios how to avoid unnecessary 'charity' from others. But his life quickly changes when he is saved by Nino. In order to pay off his 'debt' to her, he fulfills her wishes by becoming her boyfriend and moving in with her, thus leaving his carefree and rich life behind him.   When he gets nervous or stressed out, Kou suffers from a bad case of asthma, just like the other members of his family.  Like the rest of the group, the mayor also nicknames him, which in his case is 'Riku.' Riku is an abbreviaton of 'recruit,' referring to a newly recruited businessman.

Ko Ichinomiya's family motto is "Never be indebted to anyone," but after losing his pants and falling into the Arakawa River, he quickly finds himself in debt to his savior, the cutely insane Nino (who happens to live under the bridge). To repay her, he vows to help her with her desire to "experience love." Along the way he'll meet the river's other residents, including a hot-blooded kappa, a Sister in drag, and a literal rock star. Sorry, Ko—when you fell into that river, I guess you really got in over your head! 
(Source: NIS America)

**Height:** 167 cm (5'6") 
**Other:** Named his cat "Nyanko-Sensei" 
**Agency:** Aoni

[Profile](https://www.aoni.co.jp/search/kamiya-hiroshi.html)

On January 1st 2025 it was announced that he had gotten married to actress and gravure model Rina Aizawa.

**Awards:**
- 2008-03: Best Supporting Actor, 2nd Annual Seiyuu Awards
- 2009-03: Best Lead Actor and Best Personality, 3rd Annual Seiyuu Awards
- 2012-03: Most Votes Award, 6th Annual Seiyuu Awards
- 2013-03: Most Votes Award, 7th Annual Seiyuu Awards  

Hosts several radio talk shows, including Dear Girl ~Stories~ with Ono Daisuke. In May 2010, he and Miyu Irino formed a Kiramune unit called KAmiYU, and sang the theme song for Mokei Senshi Gunpla Builders Beginning G.  Their first mini-album "link-up" was released on August 3, 2011.

__Non-Anime Roles:__
- Neuvillette in Genshin Impact
- Shou Ronpo in Uchu Sentai Kyuranger
- Madrex in Bakuage Sentai Boonboomger

In the dry riverbed of Arakawa River, undefeated elite Ichinomiya Kou (aka Ric) met the lovely homeless girl Nino, a self-declared Venusian. Their awkward love stirs up trouble among the other strange inhabitants of the riverbed.
 
(Source: Anime News Network)

Kou Ichinomiya, a young man born with a silver spoon in his mouth and raised with the mantra “never owe anyone” suddenly finds himself deeply indebted to a young homeless woman, Nino, who lives on the Arakawa river bank and claims to originally be from the planet Venus. When Nino rejects all of Kou’s mundane offers of money or housing, Kou is at a loss for how to repay his debt, until Nino suddenly asks him to teach her about love. A daunting task, but the over-achieving Kou is determined to return Nino’s favor. And so begins Kou’s life under the bridge, along with a band of eccentric characters who have formed their own little community outside the boundaries of typical Tokyoite life…
 
(Source: Kodansha USA)