Hikaru Hoshihara is a 14-year-old student at Kamui Daimon Comprehensive Academy and a member of Jenock's First Platoon. Initially reserved and distrustful, he displays impressive LBX piloting skills characterized by a calm yet aggressive combat approach. His lonely childhood, marked by his father's absence, fostered a hot temper that alienated peers and cemented his lone-wolf mentality. He pilots multiple LBX units across various engagements, starting with Lucifer before advancing to DC Offenser, Val Sparos, Val Diver, and Jil Samurai during Ura Ranking battles. His competitive drive compels him to seek out stronger opponents, often ignoring orders to pursue solo victories in early War Time operations. Interactions with Arata Sena catalyze significant development. Initially dismissive, Hikaru gradually forms a connection, declaring Arata his rival after witnessing a self-sacrificing decoy maneuver. This evolving bond leads Hikaru to lend study notes and voice concern for Arata's safety on missions. During Operation Seize Tandem Harbor, recalling his father's advice about roles prompts him to acknowledge teamwork's importance. Later developments see him openly admitting jealousy toward Arata's Overload ability while offering constructive advice, showcasing emotional growth. He confronts higher authorities regarding Second World's true intentions and commits to preventing global control by antagonistic forces. His participation in Ranking Battles secures him the top rank, intensifying rivalries within Jenock. Prior to the series, he achieved seven official tournament victories, including an Artemis Tournament win. His extracurricular activities include kendo, and he performs the series' ending theme alongside his platoon members.