We Are Aliens

我々は宇宙人

Also known as Wareware wa Uchuujin, Wareware wa Uchūjin, Un Monde entre nous

One summer in the third grade, a quiet boy named Tsubasa meets Gyotaro, a boy everyone in the class looked up to, and the two become close friends. Within their small world, they share irreplaceable moments—until a small incident suddenly tears them apart.