Btooom! (Japanese: ブトゥーム!, Hepburn: Butūmu!) is a Japanese manga series written and illustrated by Junya Inoue. It has been serialized in Weekly Comic Bunch since 2009 and later in Monthly Comic Bunch, with chapters collected into 26 tankōbon volumes as of 2018. 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.