Tetsu Sendagaya is the Eve of Old Child, the Servamp of Pride. He works at a family-owned hot springs resort. Although he is only 14, he is often mistaken for a university student because of his great stature and muscular figure. He has blonde hair, with two blue clips on either side of his face, and blue eyes. His usually seen wearing white pants, a dark blue singlet, a white vest and a white and blue scarf with the hiragana for 'yu' (ゆ) on it. He is also usually seen carrying his lead, a large black coffin with an advertisement for his family's hot spring resort painted on it. 
 
(Source: MAL)

Mahiru Shirota dislikes difficult things, preferring to live a simple life. But after rescuing a cat he names Kuro, life takes a turn for the complex. Kuro turns out to be a servamp—a servant vampire, named Sleepy Ash and the two form a contract. Kissing his simple life goodbye, Mahiru is pulled into the world of vampires, the seven deadly Servamps, and war. Life couldn’t be more complicated! 
 
(Source: Crunchyroll)

[Twitter](https://twitter.com/onoyuki19840622) | [Official Website](http://www.onoyuki.com/) | [Instagram](https://www.instagram.com/onoyuki_official/)

__Height:__ 167cm

Yuuki Ono is a Japanese voice actor and singer who dubs in anime shows and video games. He was represented by Atomic Monkey and is now a freelancer. His major roles are: Josuke Higashikata in JoJo's Bizarre Adventure: Diamond Is Unbreakable, Taiga Kagami in Kuroko's Basketball, Zenkichi Hitoyoshi in Medaka Box, Kaname Tsukahara in Kimi to Boku, Masayuki Hori in Monthly Girls' Nozaki-kun and Ishisaki Jun in Ace of Diamond. 

On October 2, 2017, Ono announced his marriage from the last seven years prior in his blog post. His wife is a person who works outside the entertainment industry. On August 2020, Ono announced the birth of his first child.

**Non-Anime Roles**
- Jiyan - Wuthering Waves (VG)

A Vampire Cat Serves Only One Master
 
When a stray black cat named Kuro crosses Mahiru Shirota’s path, the high school freshman’s life will never be the same again. Kuro is, in fact, no ordinary feline, but a servamp: a servant vampire. While Mahiru’s personal philosophy is one of non-intervention, he soon becomes embroiled in an ancient, altogether surreal conflict between vampires and humans. (Source: Seven Seas Entertainment) 
Note: Includes five extra chapters.

The Servamps and their pact-bound "Eves" are finally getting back to their normal lives as they recover from their injuries from the previous battles. However, when it starts snowing in the middle of summer, one of the Eves, Mahiru Shirota, suspects vampiric interference. Concerned by the strange phenomenon, he sets out to gather the group once more to try and solve the mystery; however, they suddenly lose contact with Misono Arisuin, the Eve of the Servamp of Lust.
 
 (Source: Bilibili TV)