Daichi is a 17-year-old high school student who lost his father years prior in a space travel accident, and left his family's home on Tanegashima afterwards. When he sees a rainbow formation on a television broadcast from the Tanegashima Space Center, he returns, and because of his skill at a particular arcade game, it makes him the perfect pilot for the Earth Engine Impacter.

(Source: Wikipedia)

When Daichi Manatsu sees a mysterious rainbow appearing near the Tanegashima Space Center, he immediately recognizes it as being similar to an apparition that formed when his father was killed in a mysterious accident years earlier. Traveling to Tanegashima, Daichi quickly finds himself involved with the machinations of Globe, a secret agency created to defend mankind from extraterrestrial forces. And while it might seem like a big job for a mere teenager, it turns out that the skills Daichi has honed on video games, combined with a special weapon called the Livlaster, make Daichi ideally suited for operating the Earth Engine Impacter, a giant robot that may be Mankind's best hope against aliens whose goal is to completely drain our world's lifeforce energy. Fortunately, Daichi won't be on his own, as he's quickly joined by a group of equally dedicated young people who all have their own skills and abilities to contribute to the battle.<br>
<br>
(Source: Sentai Filmworks)

[Agency Profile](https://junction99.com/?page_id=1134)

He joined a theater troupe when he was 4 years old, and two years later made his acting debut in the historical drama Korczak. He remained with the theater troupe until March 2006, when he moved to Junction.

Made his voice acting debut in 1996 on [Taiho Shichauzo](https://anilist.co/anime/1577/). He auditioned and got the role of [Haku](https://anilist.co/character/385/) in the 2001 film [Spirited Away](https://anilist.co/anime/199/). The same year, he voiced the eponymous main character in [PaRappa The Rapper](https://anilist.co/anime/3736/), and the following year he started voicing Sora in the Kingdom Hearts video game series, a character who he still voices to this day.

He released his debut mini-album Soleil on June 26, 2009 and his first single album, Faith, on November 25, 2009. Since May 2010, he and [Hiroshi Kamiya](https://anilist.co/staff/95118/) formed a music duo called [KAmiYU](https://anilist.co/staff/116031/). Their first mini-album "link-up" was released on August 3, 2011.

Announced his marriage with an unspecified woman on September 3, 2021.

__Non-anime voice roles:__
- Sora - *Kingdom Hearts* series (VG)
- Cyno - *Genshin Impact* (VG) 

One night right before summer vacation, Daichi Manatsu, a second-year in high school, sees a weird round rainbow floating in the sky above Tanegashima and ventures there alone. He has seen this rainbow before. With the memories of his father's mysterious death and an encounter of a mysterious boy and girl, Daiji arrives on the island while the alarm of a building labeled "Earth Engine" is going off. Someone asks him if he's a captain, just as robotic intruders from Uranus called "Kiltgang" arrive. The battle around the shining stars is about to begin.