Yōtarō Rindō/Plot

Background
Yōtarō and his sister Ruka were heirs to the throne of Aristera. He was taken to Earth as an infant by Cronin after Aristera fell and his parents were killed.

Black Trigger Capture Arc
Yōtarō debuts at Tamakoma Branch where he is riding on Raijinmaru, much to the confusion of Osamu.