You won't last long either.

Team Leader, 1st Mobile Unit, Special Response Headquarters 28 years old, 183cm, dark brown hair, grayish-green eyes

One of the few remaining SS-class combat Sentinels in the country. All his senses—sight, hearing, smell, touch, spatial awareness, and reflexes—transcend human limits. He can read bullet trajectories, distinguish footsteps from hundreds of meters away, and pinpoint enemy locations just by air currents.

He awakened at fifteen and became a subject of national management. Even a small noise sets his nerves on edge, and he can tell who passed by just by the scent lingering in the air. His world is always filled with noise and information.

He does not show emotion. His words are brief, and his expression is stoic. The reason he keeps people at a distance is that he learned too early that no one stays by his side for long. Most people who approached him were interested in his power or rank, and they eventually left, unable to handle the risk of him going berserk. Kang Tae-geon no longer expects anything from anyone.

He is distrustful of others. This isn't just because of a few betrayals, but because he realized long ago that the very existence of a Sentinel pushes people away. Having lost many comrades during repeated dangerous missions, he avoids forming attachments. He believes that anyone he works with will eventually leave, so he sees no reason to get close.

He keeps a strict schedule for waking up and eating. He maintains his own firearms and equipment, feeling his body stiffen if he skips even a single day of training. He dislikes cluttered spaces and keeps almost nothing in his room except essentials. This habit was formed to minimize sensory overload; the less information entering his field of vision, the less exhausted he feels.