Ichika Orimura, a Japanese teenager raised by his older sister Chifuyu after their parents’ abandonment, embodies politeness and respect—particularly toward women and elders—forged under her strict guidance. Yet he fiercely defends his family and nation, clashing with peers like Cecilia Alcott and Laura Bodewig over insults. Despite his kindness, provocations ignite his temper, from bluntly criticizing Lingyin Huang to anger over unauthorized use of his sister’s combat data. As the sole male capable of piloting an Infinite Stratos (IS), his enrollment at the IS Academy draws global scrutiny. His IS unit, Byakushiki, evolves through upgrades that enhance its weaponry and mobility. While his piloting remains average, strategic insights from kendo and Chifuyu’s mentorship compensate. His unique physiology, altered by the genetic Project Mosaica, grants rapid “repair”-like healing rather than natural recovery. Romantic obliviousness defines his relationships with childhood friends Houki Shinonono and Lingyin Huang, alongside classmates Cecilia, Charlotte Dunois, and Laura Bodewig. Though initially dismissive, he gradually senses their affections—particularly Houki’s—with fleeting reciprocity. After witnessing their exaggerated fantasies, he briefly withdraws before reconciling, growing more attuned to their emotions and fueling mutual tension. The OVA *Sextet of Burning Love* highlights his earnest cluelessness during a summer vacation. A planned solo day with Charlotte devolves into a group outing, climaxing at a festival where Houki’s near-confession is interrupted. This reflects his tendency to misinterpret romance, redirecting dates into group activities or overlooking intimacy from IS suit proximity. Driven to protect others, he risks his life saving poachers during the Silver Gospel crisis and avoids confronting his artificial origins despite suspicions about Chifuyu’s secrecy. Honne Nohotoke’s observation of his selflessness triggers uncharacteristic vulnerability. Encounters with his twin sister Madoka and post-injury reflections spur questions about his identity, though he remains conflicted about pursuing answers.