Kanata Hongō is a Japanese actor. He is part of Stardust Promotion and has appeared several times in music videos, movies, TV series, and magazines. His major breakthrough role was as Ryoma Echizen in the live-action film adaptation of The Prince of Tennis and became even more widely known when he was cast as Shin in Nana 2. In television, his most notable role was as Hinata in Himitsu no Hanazono and he starred in Seigi no Mikata. For the live-action feature film adaptation of Attack on Titan, he portrayed Armin Arlert. He has also been involved in anime voice acting as the lead character Ryōta Sakamoto in Btooom!.

Btooom! is a Japanese manga series written and illustrated by Junya Inoue. It was serialized in Shinchosha's seinen manga magazine Comic Bunch, where it ran from 2009 until 2018, with its chapters collected into 26 tankōbon volumes. Btooom! follows the adventures of Ryōta Sakamoto, an unemployed and isolated young man who is one of the world's top players in the titular video game. After Ryōta is nominated to participate in the real-life version of the game, he becomes trapped inside it and meets his love interest Himiko, who was his in-game wife. With the help of their fellow players, Ryōta and Himiko must find a way to return home.