About “BTOOOM!”
Btooom! is a Japanese manga series written and illustrated by Junya Inoue. It was serialized in Shinchosha's seinen manga magazine Comic Bunch from 2009 to 2018, and collected into 26 tankōbon volumes. The story follows Ryōta Sakamoto, an unemployed and isolated young man who is one of the top players in the video game Btooom!. He is selected to participate in a real-life version of the game, where he becomes trapped and meets Himiko, his in-game wife. With the help of other players, Ryōta and Himiko work to find a way back to the real world. (Summary adapted from Wikipedia, CC BY-SA 4.0.)
Some summaries adapted from Wikipedia, CC BY-SA 4.0.