1) Rarely used backup 2) Rarely used substitute 3) Reserve player 4) Second-stringer 5) Seldom-used substitute 6) Substitute 7) Substitute at the stadium 8) Substitute player 9) Substitute player, slang 1) Reserve 2) Scrub 
Kyoshiro to Towa no Sora revolves around the life of Kuu Shiratori, a seemingly normal high school girl who enjoys her school life in the giant city Academia, which is thought of as a symbol of recovery for humanity since already ten years have passed since the greatest disaster mankind had ever seen, occurred. Kuu has recently been having a recur...
a substitute who rarely gets to play in a game.