The protagonist of Btooom! He is a champion player of the game on Xbox, and when sent to a mysterious island, he must put his skills to the test in order to survive. his starting BIM type is timer.
Ryouta is an unemployed, 22 years old gamer who plays Btooom! all day. His mother tries to get him a job, but Ryouta yells at her for deciding his life. He is bent on getting his dream job at the company that makes Btooom!, Tyrannos Japan. Though, there are no job openings.
Ryouta is created by Junya Inoue.
He can be sincere in protecting his comrades, and other times, he can lose his temper when he learns that his mother tries to get him a job at an Udon restaurant.