He is a second-year student at Magata High School. He is also a member of "Tendo Civil Security Company", headed by Kisara Tendo. Together with his partner – Initiator named Enju – he is fighting against parasites Gastrea, the creatures beyond human's imagination.

The Gastrea virus spreads like wildfire, causing each infected host to rapidly mutate, gaining new powers and abilities with every stage of development, even while they continue to attack, kill and infect multiple new hosts. Unable to fight a pandemic enemy that turns defenders into adversaries, the shocked remnants of the human race are forced to retreat into cities surrounded by giant monoliths made of Varanium, one of the few materials that can stop the Gastrea. Now mankind's last hope lies in the Cursed Children: young girls infected with the virus who have managed to retain a hold on their humanity. Paired with a partner, they alone have the strength to take on a Gastrea in one-on-one combat. But the very thing that gives them power is a ticking time bomb, so even as they protect humanity, they are also feared and shunned. Are they Girls? Monsters? Or Mankind's Ultimate Salvation? 
 
(Source: Sentai Filmworks)

[Profile](https://vims.co.jp/talent_profile_detail.php?id=7) | [Twitter](https://twitter.com/kaji__official) | [Instagram](https://www.instagram.com/yuki_kaji_official/) | [YouTube](https://www.youtube.com/channel/UCx2XAGS0FoG9S6r0bhNo2UA)

Kaji has won several awards, including Best Voice Actor at the 12th Tokyo Anime Awards (2013), Best Actor at the 7th Seiyu Awards (2013), and Best Voice Actor at the 36th Anime Grand Prix (2014).

Married voice actress [Ayana Taketatsu](https://anilist.co/staff/101996/) in 2019.

__Non-Anime Roles:__ 
~! Abe (Abraham Attah) in "Spider-Man: Homecoming" (live-action film) (Japanese)
Ace in "Final Fantasy Type-0" (VG) (Japanese)
Adol Christin in "Ys VIII: Lacrimosa of Dana" (VG) (Japanese)
Adol Christin in "Ys: Foliage Ocean in Celceta" (VG) (Japanese)
Akio Fudo in "Inazuma Eleven 2" (VG) (Japanese)
Akio Fudo in "Inazuma Eleven 3" (VG) (Japanese)
Akio Fudo in "Inazuma Eleven Strikers" (VG) (Japanese)
Akira Shimotsuki in "Watashi ni xx Shinasai!" (Drama CD) (Japanese)
Alex in "Don't Breathe" (live-action film, BD & DVD release) (Japanese)
Arahagi in "Yuugen Romantica Hatenkou: Dai Roku no Nazo - Bakeneko Arahagi" (Drama CD) (Japanese)
Arahagi in "Yuugen Romantica Uchouten: Dai Roku no Nazo - Bakeneko Arahagi" (Drama CD) (Japanese)
Arahagi in "Yuugen Romantica: Dai Yon no Nazo - Bakeneko Arahagi" (Drama CD) (Japanese)
Ayerscarpe in "Arknights" (VG/Mobile) (Japanese)
Ayn Talfryn in "Tales of Zestiria" (VG) (Japanese)
Basil Sabanci in "Valkyria: Azure Revolution" (VG) (Japanese)
Bhunivelze in "Lightning Returns: Final Fantasy XIII" (VG) (Japanese)
Brainy Smurf in "The Smurfs" (animated TV series/Animax dub) (Japanese)
Bren Turner in "E.X. Troopers" (VG) (Japanese)
Cecil in "Hortensia Saga" (VG) (Japanese)
Dick Grayson/Robin (Brenton Thwaites) in "Titans" (live-action web series) (Japanese)
Eight (VIII) in "Super Smash Bros Ultimate" (VG) (Japanese)
Eln in "Age of Gunslingers Online" (VG) (Japanese)
En Shinohara in "Usotsuki Lily" (VOMIC) (Japanese)
Enji Tsuzuri in "Boku to Majo no Jikan" (VOMIC) (Japanese)
Erik in "Mōjū-tsukai to Ōji-sama ~Flower & Snow~" (VG) (Japanese)
Flynn in "Shin Megami Tensei IV" (VG) (Japanese)
Flynn in "Shin Megami Tensei IV: Final" (VG) (Japanese)
Fudou Akio in "Inazuma Eleven 3 Sekai e no Chousen!! Spark/Bomber" (VG) (Japanese)
Ganryū Hanakiri in "Otome Youkai Zakuro Vol. 10 Limited Edition Drama CD" (Drama CD) (Japanese)
Gaon in "Kikai Sentai Zenkaiger" (TV series) (Japanese)
Hayato Ozaki in "Nil Admirari no Tenbin Teito Genwaku Kitan" (VG) (Japanese)
Hero in "Gensosuikoden Tierkreis" (VG) (Japanese)
Hikaru Seto in "Cheer Boy! vol.3" (Drama CD) (Japanese)
Hinata in "Aigan Shounen" (Drama CD) (Japanese)
Hitoshi Taniguchi in "Reinouryokusha Odagiri Kyouko no Uso" (VOMIC) (Japanese)
Hope Estheim in "Final Fantasy XIII" (Japanese)
Hope Estheim in "Final Fantasy XIII-2" (VG) (Japanese)
Hope Estheim in "Lightning Returns: Final Fantasy XIII" (VG) (Japanese)
Hoshiguma Doji in "Onmyoji" (VG) (Japanese)
Hyuuga Masamune in "Touken Ranbu" (browser game) (Japanese)
Ichinose Kazuya in "Inazuma Eleven 3 Sekai e no Chousen!! Spark/Bomber" (VG) (Japanese)
Ikuto Taki in "RUNLIMIT Case 2" (Drama CD) (Japanese)
Jean Pierre in "Counter Strike Online 2" (VG) (Japanese)
Johnny Joestar in "JoJo's Bizarre Adventure: All Star Battle" (VG) (Japanese)
Kakeru in "Yandere Heaven Vol. 1" (Drama CD) (Japanese)
Kanato Sakamaki in "Diabolik Lovers" (VG) (Japanese)
Katai Tayama in "Bungou to Alchemist" (VG) (Japanese)
Kazuya Ichinose in "Inazuma Eleven 2" (VG) (Japanese)
Kazuya Ichinose in "Inazuma Eleven 3" (VG) (Japanese)
Kazuya Ichinose in "Inazuma Eleven Strikers" (VG) (Japanese)
Kei Okazaki in "Collar x Malice Character CD Vol. 2 Okazaki Kei" (music/Drama CD) (Japanese)
Kei Okazaki in "CollarxMalice -Unlimited-" (VG) (Japanese)
Kei Okazaki in "CollarxMalice" (VG) (Japanese)
Keisuke Takagi in "Devil Survivor Over Clock" (VG) (Japanese)
Kentucky in "Sen Jyushi" (VG) (Japanese)
Leonis in "Record of Agarest War Zero" (VG) (Japanese)
Link in "Hyrule " (VG) (Japanese)
Luy in "Kamigami no Gosui" ("Siesta of the Gods") (Drama CD) (Japanese)
Luke Pearce in "Tears Of Themis" (mobile game) (Japanese)
Michizane in "Ichibanketsu Online" (VG) (Japanese)
Norman in "The Secret Life of Pets" (animated film) (Japanese)
Prince of Darkness in "Shironeko Project" (VG) (Japanese)
Rath in "Black Wolves Saga" (VG) (Japanese)
Rikka Toratani in "Storm Lover V" (VG) (Japanese)
Roche in "BLUE ROSES ~Yousei to Aoi Hitomi no Senshitachi~" (VG) (Japanese)
Sakamaki Kanato in "Diabolik Lovers Blood & LoveSweat" (Drama CD) (Japanese)
Sakamaki Kanato in "Diabolik Lovers MORE,BLOOD" (VG) (Japanese)
Sakamaki Kanato in "Diabolik Lovers VERSUS 3 Kanato VS Reiji" (Drama CD) (Japanese)
Sakamaki Kanato in "Diabolik Lovers ~Haunted Dark Bridal~" (VG) (Japanese)
Seth in "UNDER NIGHT IN-BIRTH" (VG) (Japanese)
Shiina Kiya in "PsychicEmotion6" (VG) (Japanese)
Syogo Shiratori in "Kizuna Striker!" (VG) (Japanese)
Takumi in "Fire Emblem Fates" (VG) (Japanese)
Takumi in "Fire Emblem Heroes" (VG) (Japanese)
Tega Sword in "No.1 Sentai Gozyuger" (TV series) (Japanese)
Thomas Edison in "Rinka Nation" (VG) (Japanese)
Thomas in "Antique Carnevale" (VG) (Japanese)
Tokugawa Iemitsu in "Akasasu Sekai de Kimi to Utau" (mobile game) (Japanese)
Tot in "Skyover" (VG) (Japanese)
Touma in "Magical Days ~The Brats's Parade~" (VG) (Japanese)
Walker Yumasaki in "Durarara!! 3way standoff" (VG/PSP) (Japanese)
White in "Granblue Fantasy" (VG) (Japanese)
Will in "Kuro Kishi to Shiro no Maou" (VG) (Japanese)
Yanagi in "Wakidenai ~Ichi no Maki: Yanagi~" (Drama CD) (Japanese)
Yoshiie Ukita in "Shinobi, Koi Utsutsu -Setsugekka Koi Emaki-" (VG) (Japanese)
Yuiga Kakeru in "NORN9" (otome VG) (Japanese)
Yuuichi Haga in "Devil Summoner: Soul Hackers" (VG) (Japanese)
Zen in "Persona Q: Shadow of Labyrinth" (VG) (Japanese)
Zhang Fei in "Sangokushi Lovers" (VG) (Japanese) !~

He claims to enjoy playing crazy or insane characters; Greed (Fullmetal Alchemist) and Asura (Soul Eater) being some of his favorites.

Ricardo Richter is the son of Peter Richter and Astrid Richter. His brother Raúl Richter is also an actor and voice actor.

The future–where a terrible battle against a parasitic virus called “Gastrea” has been fought, and lost. Humanity is cornered, and lives in despair. Rentaro and Enju face constant danger in their work as a team anti-Gastrea specialists known as “Civil Security.” If the daily fight against oblivion weren’t enough, they’ll soon face a threat that could destroy all of Tokyo…
 
(Source: Yen Press)

A near future, where humans have been defeated by the viral parasites named Gastrea. They have been exiled into a small territory and live in despair, side by side with terror. 
In this world trapped in darkness&mdash; 
Rentaro, a boy living near Tokyo and member of the "Civil Security" &ndash; an organization specializing in fighting against the Gastrea &ndash; is used to accomplishing dangerous tasks. His partner is Enju, a precocious young girl. They fight thanks to their peculiar powers until one day, when they receive a special assignment from the government. This top secret mission is to prevent the destruction of Tokyo... 
Set in a near future, this thrilling heroic-action story... starts now! 
(Source: Baka-Tsuki)

Rentarou Satomi