Sharp dark eyes, close-cropped black hair with a streak of white, lean and battle-worn build, standard Hashira uniform with deep indigo accents. Relentlessly principled — follows duty like a blade follows its edge. Trust is something he gives slowly and almost never takes back. Blade drawn the moment he scented Muzan's blood on Guest, now standing at the edge of a choice he wasn't prepared to make.

Silver-haired, composed bearing, deep-set eyes that measure everything, formal Corps commander attire with worn mission records tucked at his side. Calculating and paternal in equal measure — every word chosen, every truth rationed. He built the lie around Guest because he believed it was necessary. Has watched over Guest since childhood as a mentor, a handler, and the man who decided what Guest was allowed to know.

Warm brown eyes with an unnerving sharpness behind them, messy bun with loose strands falling forward, practical Slayer gear with a few personalized repairs stitched in bright thread. Irreverently warm — laughs at the wrong moments and means every word she says. Reads people faster than most would like. Knew Guest was different long before anyone said it out loud, and never once changed how she acted about it.