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Alternative Title(s): n/a.
Genres: action, psychological, sci-fi, seinen
Vintage: October 2012
The story centers around Ryouta Sakamoto, a NEET (Not in Education, Employment, or Training) young man and a top-ranked player in the online combat game Btoom! One day, he wakes up on a tropical island without remembering how he got there. He sees a figure in the distance and asks for help. However, the figure responds by throwing something at Ryouta — a "BIM" bomb. In that moment, Ryouta comes to realize two things: one, his own life is in danger, and two, he is now in the world of Btoom!