Hakutaku is a Celestial Beast and pharmacist living in Togenkyo at the Sentou Farm in Heaven. He took in Momotaro as his assistant and has been imparting his skills to the ex-ogre slayer ever since. He dwells among rabbits who also learn medical skills from him and aid him in preparation of herbal concoctions. Hoozuki is his arch-nemesis despite their many similarities.
(Source: Hoozuki no Reitetsu Wikia)

Hoozuki is the aide to the great king of Hell, King Enma. Calm and super-sadistic, Hoozuki tries to resolve the various problems in Hell, including a rampaging Momotarou and his companions. However, he also likes spending his free time on his hobbies, such as fawning over cute animals and raising "Goldfish Flowers."
 
(Source: Crunchyroll)

He was married to voice actor [Kanako Mitsuhashi](https://anilist.co/staff/95546/Kanako-Mitsuhashi) but they divorced on June 2012. 

Non-anime roles:
-Baizhu (Genshin Impact)
-Roland (Punishing: Gray Raven)

The second season of Hoozuki no Reitetsu. 

As the right hand man of the Great King Enma, Hozuki’s job is literally a living hell. As the most competent demon in the underworld, it’s up to him to solve problems and invent new forms of hilarious and excruciating torture. 

(Source: HIDIVE)

The second cour of Hoozuki no Reitetsu 2.

In the afterlife, there exists Heaven and Hell. Hell consists of the Eight Greater Hells and the Eight Cold Hells, which are further divided into 272 subdivisions. Spearheading the seemingly endless, multifarious affairs in this gargantuan Hell is but one Fierce God, King Enma's first aide, Hozuki. Between this cool-headed sadist and his colorful band of peers, every day is a riot in Hell! And though this book might make Hell seem like a happening place, please try to behave during life!
 
(Source: Kodansha USA)

Three Hoozuki no Reitetsu OVAs will be released in limited editions of volume 17 to 19, releasing February 23, 2015, May 22, 2015, and August 21, 2015, respectively.

Bundled with the limited editions of volumes 29-31 of the Hoozuki no Reitetsu manga.