Boy X

"Boy X" is a character in Battle in 5 Seconds After Meeting series.

Plot
During the first day of the Fourth Program, he killed all the other ten members of his observer's team.

Lord of the Flies

 * Description: The ability to turn something of value into a bomb.
 * He is able to turn something that has some monetary value into an explosive.
 * The firepower of the bomb depends on the value of the object. The higher the value, the greater the explosion.
 * The "value" is determined by the user's understanding. A 10 yen coin will always have a universal value of "10 yen". A bottle of water that you buy for 1.60 yen has a value of "1.60 yen".
 * This ability does not work with things whose exact value is unknown to the user.