Kazutomi Yamamoto is a Japanese voice actor and singer born on January 3, 1988, in Hyogo Prefecture, Japan. He began his career in 2009 after graduating from the Production Ace Voice Acting Institute. He was initially represented by the agency Production Ace before moving to Amuleto in April 2024.

Yamamoto is known for his naturally high-pitched and clear voice, a trait that allows him to portray a wide range of characters, from young boys to energetic and sometimes feminine roles. His vocal range and versatility have led to frequent casting in roles that require a bright or androgynous tone.

His career gained significant momentum in 2012 with his first leading role as Kio Asuno in the long-running mecha series Mobile Suit Gundam AGE. This performance helped establish him as a rising talent in the industry. In 2013, his early promise was formally recognized when he won the Best New Actor Award at the 7th Seiyu Awards, an honor he shared with fellow voice actor Nobunaga Shimazaki.

Yamamoto's filmography is extensive and varied. Among his many roles, he is particularly well-known for portraying Yumoto Hakone across multiple installments of the Cute High Earth Defense Club LOVE! franchise. He has also taken on prominent roles in a wide array of series, many of which were listed in the query, including Leonardo Stoller in Chaika - The Coffin Princess, Isao Kasuga in Gleipnir, Rabbit Head in Skull-face Bookseller Honda-san, Graham in RErideD, and Sora Harukawa in the Ensemble Stars! franchise. He has also voiced characters in other popular series such as Another, The Seven Deadly Sins, and Haikyu!!. His work extends to video games as well, with notable roles including Midare Toushirou in Touken Ranbu and a voice role in the globally popular game Genshin Impact.

In addition to voice acting, Yamamoto is also an active singer. He made his solo singing debut in 2014 with the single Click Your Heart!!, which was used as the ending theme song for the anime Love Stage!!. He has since released additional music, including the single Soleil MORE and a mini-album titled White, under the labels Lantis and Nippon Columbia. His career also includes performances on stage, such as his role as Allen Avadonia in the musical adaptation of the Vocaloid song Aku no Musume in 2016.