After Haru and Gaku become the first Japanese people in the 21st century to be listed among the world's top-ten billionaires, Gaku reflects on when he and Haru met and the events that led to the founding of their company. What started as a middle school acquaintanceship builds to a fruitful and unorthodox partnership as the two progress on their ruthless path to success.

Volume 1 of the Trillion Game manga series by Riichiro Inagaki.