Mirai-Trunks Vegeta Briefs sat up in bed. His name meant little to him; it was just for everyone else's use, really.
Mirai: an imaginary title that distinguished him from his younger self.
Trunks: his infant counterpart's name; one that used to be his.
Vegeta: his father's name.
Briefs: his mother's name.
It meant only a backward timeline to him (and he of all people would understand timelines). Mirai used to be Trunks. Trunks came from Vegeta and Briefs. He was a ghost of a name that held only facts.
"Mirai, good morning!"
He smiled at his mother, or rather, his mother's younger counterpart. He'd lived in the alternate timeline for nearly a year now. Having returned from defeated his timeline's androids, he'd accepted Bulma's offer to stay. The androids had slaughtered his own mother just as he was arriving to destroy them. Distraught and desolate, he'd once again traveled to the past - this time with his mother's blood on his arms and dried tears on his face.
On that day, he stopped hoping.
His alternate family gathered for breakfast. The names for the faces: Vegeta, Bulma, Dr. Briefs, Bunny Briefs, baby Trunks, baby Goten, and...Gohan.
Mirai turned up his nose. The boy was such a disappointment.
Gohan did not fit into the space Mirai had designated in his mind. His Gohan was a warrior, who would fight to his last breath to defend the world. This Gohan was...a child. A child who knew how to fight, but didn't want to. A child who knew his responsibilities, but didn't carry them.
A disappointment. This Gohan was an imposter.
After their parents' deaths (Goku in the Cell Games and Chi-Chi in Goten's childbirth), the Son boys had come to live at Capsule Corps. And every day, Mirai's disdain for the eldest grew. He made sure the child knew to keep his distance.
Mirai finished breakfast, excused himself, and went to train with his father.