Nagi is a second-year student at Megurogawa Gakuen. He is the biological son of a hotel tycoon, but due to a mix-up after his birth is raised by a different family.

Nagi seems to be obsessed with studying to the point that he studies day and night in order to achieve top marks. He is quite capable in pretty much everything, whether it is housework or schoolwork, proving his culinary skills multiple times by preparing delicious dishes everyday. He is a free-willed and determined person with a stubborn attitude to never give up. He is also naïve when it comes to the girls around him. Yet his kindhearted nature means that he will protect the ones that he cares about by doing everything in his power to help them.

Mixed up with another family's child as a baby, high school student Umino Nagi is finally meeting his biological parents. On the day of their meeting, he happens to encounter Amano Erika, a high school student at a prestigious and wealthy girls school. At her request, he's half-forced into pretending to be her boyfriend so she can avoid marrying her fiance....However, not only were they the babies who had been mixed up, they're also engaged to each other! The loving parents of both families officially recognize their engagement, and the couple begins living together. Nagi is in love with his classmate Segawa Hiro, and Erika is determined to rebel against her father, so the couple agree not to get involved with each other. The mixed-up and chaotic romantic comedy starts now! 
 
(Source: Crunchyroll)
 
 Note: The final two episodes were broadcast together as a one hour special

__Height:__ 174 cm

[Profile](https://stay-luck.com/talent/ishikawa-kaito/) | [Twitter](https://twitter.com/ish_kaito) | [Youtube](https://www.youtube.com/user/apatyai1013) | [Instagram](https://www.instagram.com/ishi_kaito1013/)

Announced his marriage to fellow voice actress [Maaya Uchida](https://anilist.co/staff/108639) on September 30, 2025.


**Non-Anime Roles:**
• Marius von Hagen (Tears of Themis)
• Il Fado de Rie (Cafe Enchante)
• Adam (Bustafellows)
• Lucien Neuschburn (even if Tempest)
• Laurier (Nekopara -Catboys Paradise-)

[Instagram](https://www.instagram.com/joaovitormafra.oficial/) | [Twitter 1](https://x.com/jvitormafra_ofc) | [Twitter 2](https://x.com/jvitormafra) | [Twitter 3](https://x.com/joaovitormafra5) | [Facebook](https://www.facebook.com/joaovitor.mafra.12) | [Youtube](https://www.youtube.com/c/Jo%C3%A3oVitorMafraOficial) | [TikTok](https://www.tiktok.com/@joaovitormafra)

João Vitor Gonçalves Henrique Mafra, better known simply as João Vitor Mafra, is a Brazilian actor, voice actor, singer, composer. He is the older brother of the voice actress [Marina Mafra](https://anilist.co/staff/307678/).

__Non-Anime Roles:__
~!- Young Simba (The Lion King 2019)
- William "Billy" Kaplan / Wiccan and Kid Loki [Earth-TRN867] (Marvel Cinematic Universe)
- Augustus "Gus" Porter (The Owl House)
- Baljeet Tjinder (2nd voice - 5th season onwards; Phineas and Ferb franchise)
- Lo'ak (Avatar: The Way of Water)
- Sam Riordan (Gen V)
- Dr. Douglas "Doogie" Howser (2nd dub; Doogie Howser, M.D.)
- Dopey / Narrator (Snow White 2025)
- Arnold "Arnie" Grape (5th dub; What's Eating Gilbert Grape)
- Drew Ferran (Wolf King)
- Grover Johnson (The Neighborhood)
- Ciccio (Luca)
- Matteo Silva (Bunk'd and Raven's Home)
- Cooper "Coop" Wrather (Coop & Cami Ask the World)
- Mr. Nibbles / Copycat (Paw Patrol)
- Facemaker (We Can Be Heroes)
- Prince Neel (Mira, Royal Detective)
- Marcus Abbott (A Quiet Place Part II)
- Ellis Ghould (Monster High 2)
- Eli Bell (Boy Swallows Universe)
- Jonathan Shaw (Terrifier 3)
- Mackenzie (Bluey)
- Rory Carmichael (Unicorn Academy)
- David (Hilda and the Mountain King)
- Arya Darbahani (Emily's Wonder Lab)
- Charley (School Spirits)
!~

[Twitter](https://twitter.com/The__Saiyan) | [Instagram](https://www.instagram.com/the__saiyan/) 

**Diego Valente Becerril Ruiz** is a Mexican voice actor. He is known for being the Latin American Spanish voice of Mike Wheeler in _Stranger Things_.

16-year-old super-studier Nagi Umino, second-year student at the Meguro River Academy high school, was switched at birth. On his way to a dinner to meet his birth parents, he accidentally meets the brash, outspoken, Erika Amano, who is determined to make Nagi her fake boyfriend as she never wants to actually marry. But once Nagi makes it to dinner, he finds his parents have decided to resolve the hospital switch by conveniently having him marry the daughter his birth parents raised...who turns out to be none other than Erika herself!
 
(Source: Kodansha USA)
 
Note: Fourteenth place of Tsugimanga 2020 Award in the Manga Category

The second season of Kakkou no Iinazuke. 
Umino Nagi and Amano Erika were born on the same day and swapped at birth. Nagi was raised as the son of a diner owner, and Erika the daughter of a hotel tycoon. Their parents encourage them to become engaged, and they begin life together. Soon though, infatuations arise as Nagi becomes stuck in a love quadrangle. Life and love are embroiled in epic turmoil as fate is set in motion once again!
 
(Source: Crunchyroll)

She is a voice actress affiliated with Rush Style.

[Profile](http://rushstyle.net/?talent=%E5%B3%B6%E7%94%B0%E3%80%80%E6%84%9B%E9%87%8E)

__Non-anime roles:__
- Foch - Azur Lane (VG)

The story of a boy meeting his real parents for the first time and a girl trying to escape an arranged marriage.


Mini animations featuring the characters from Kakkou no Iinazuke anime posted on the KADOKAWA Anime YouTube channel and the official Cuckoo Anime Twitter account.