Megumi Kumashiro, often called Gumi, is a sniper assigned to the SORD unit based at St. Aile's International, a sister school to Mihama Academy. She has mint‑green hair and blue eyes, and her birthday is November 18. Her nickname is Mystic Eye, earned from the reputation that once she has a target in her sights, there is no escape. Her primary weapon is a Blaser R93. Gumi carries herself like an old‑school war veteran, approaching her duties with a single‑minded focus. She burns with a powerful sense of justice and takes a hard line against any unscrupulous behavior, often delivering harsh rebukes that can startle others. Her strong moral convictions drive her to act decisively against wrongdoing, and her role in the story is that of a supporting member of the SORD team, contributing her sharp shooting skills and unwavering attitude in missions. She appears in both the anime and manga adaptations of Grisaia: Phantom Trigger. Details about her background, specific relationships with other characters, and personal growth over the course of the story are not extensively documented in the available material. Her notable ability is her exceptional marksmanship, particularly with her sniper rifle, which makes her a formidable long‑range combatant.