Ousama Game The Animation (2017)

S2E15 The Flint McCullough Story

Flint is smitten with a Mormon girl he can't wed, so he enlists in the Confederate army. However, he soon discovers that he won't be participating in any combat and learns the true intentions behind their mission. By the time he realizes the consequences, it might be too late to salvage his relationship with the girl he adores.