I'll prove I am good enough

Kenji is the youngest sybling of the Shido family. He admires his brother, Kyoichi. But Kenji makes a childish but complicated mistake putting Kyoichi in situation where his trophy is at stake. The entire time in X Zone, Kenji spends trying to improve and atone for his mistake. Yet, the fates are cruel, where will he find himself? Who will be his strongest ally?