OVA
Description
Ibushi Arima holds the position of vice president within Binan High School's student council, the Conquest Club. An 18-year-old member of class 3-B, his birthday falls on November 10th, placing him under the Scorpio zodiac. He possesses AB blood type and stands 184 cm tall. Wavy dark green hair frames his face, complementing red, slightly droopy eyes that lend him a gentle outward demeanor.

Hailing from an upper-class family, Ibushi grew accustomed to emotional detachment due to his family's focus on social appearances and superficial connections. His perspective shifted dramatically in childhood upon encountering Kinshiro Kusatsu and Atsushi Kinugawa. Kinshiro's authentic kindness and smile resonated deeply, forging a powerful sense of loyalty and emotional connection starkly different from his earlier isolation. This foundational bond fuels his unwavering dedication to Kinshiro, whom he supports with butler-like attentiveness. He frequently acts as a mediator between Kinshiro and strong personalities like Akoya Gero, working to preserve harmony within the student council.

As a Conquest Club member, Ibushi transforms into the Silver Chevalier, Argent, invoking the call "Conquest!". In this empowered state, he wields a rapier and manipulates silver chains for both offense and defensive barriers. Commanding the wind element, he contributes to the group's combined special attack, Ulutima Adamas, by firing a silver beam from his rapier. While typically observant and reserved during conflicts, he actively engages in battles when required, such as confronting Cerulean in the first season's eleventh episode.

His personality balances calm politeness with moments of sharp or harsh commentary. Outside council duties, his hobbies include gardening—specifically cultivating herbs for tea—and playing backgammon. He enjoys carbonated rice crackers but holds a dislike for snails and salty licorice (salmiakki). His role extends beyond administration; he prepares tea for council meetings and operates as a stabilizing influence among his peers.

His character journey throughout the series remains intrinsically linked to his loyalty to Kinshiro, tracing a path from a detached upbringing towards finding purpose through the bonds of friendship and his responsibilities within the Conquest Club.