History
Sho Minamimoto is a Reaper for the Reapers' Game, a competition held to decide the fate of men's souls after they have diseased. He was chosen as the Game Master for the Composer's proxy, Neku Sakuraba's second game. The Game Masters are, in essence, high ranked Reapers hand selected by the Composer each week, who are responsible for assigning the missions during their designated week long Game.
Although frowned upon, the Game Master can actually neglect to assign missions for any of the first six days. However, they have no control over the seventh, as the mission for the final day is ALWAYS to erase the Game Master. This is assigned by the Composer himself. It is crucial for the Game Master to issue missions each day to attempt to erase the Players, and increase his or her chances of survival on the seventh day, when they must fight the survivors.
A week before his Game even began, Minamimoto, after learning the RG identity of the Composer, attempted to murder him in Udagawa, with an extreme lust to become the Composer. In order to become the Composer, you must first defeat the previous one. The Composer is much more limited in the RG than he is in the UG, so this was somewhat of a smart attempt. Minamimoto's murder attempt failed regardless, and he fled Udagawa.
Minamimoto's first mission as Game Master was fairly simple to anyone who knows their basic algebra: "X = 30 + 74". The answer to this equation being 104; or, in other words, reach the 104 building. When Neku and his partner Joshua arrived at 104, Minamimoto was quick to notice Joshua, who he, along with only one other (the Producer, Sanae Hanekoma), knew as the Composer's RG identity.
His mission for the second day? You guessed it, another math equation. "Acquire the √3 Au pin." This actually translates as an instruction to win a trophy pin at a local Tin Pin Slammer competition. As this occurred, Sanae Hanekoma, the Producer, was giving Minamimoto the Angel's secrets on how to create Taboo Noise. This was a desperation act by Hanekoma to prevent the destruction of Shibuya, should the Composer win his game with the Conductor. Hanekoma chose Minamimoto because of his determination against the Composer.
After receiving these secrets, Minamimoto neglected to assign missions for the next three days, and focused on creating Taboo Noise to target the Composer.
Day 6 came along, and Minamimoto assigned his first mission since Day 2. "Beat the bosses of 2.2360679's 0+5." This translated to defeating the Noise at the Scramble Crossing and Udagawa. While this happened, more Taboo Noise began to attack Reapers and Players.
On the 7th Day, the players were ordered by a special mission sent by the Conductor to erase the Game Master at Pork City, Sho Minamimoto. Neku and Joshua both arrived, and were able to erase him, after a shocking false-revelation for Neku that Sho was actually his killer.
Before his erasure, Minamimoto sent a final attack that would have erased Neku, but Joshua took this i Level Flare attack for him and was sacrificed.
Upon his erasure, Minamimoto woke in Econtra.