سام هوستون

A childhood friend of Jomy, Sam passes his adulthood exam and is placed in the same class as Keith, where the two become close friends.

[Spoiler: He eventually loses his mind and is reduced to the mentality of am 8-year-old, his mind ironically filled only with the memories of his childhood that repeated memory erasure had forced him to forget. Eventually, he dies from pneumonia after running out in the rain for hours. Keith carries Sam's blood in his earrings.]

-Wikipedia