Narumi Gen Captain of the First Division of the Japan Anti-Kaiju Defense Force. While he is usually a shut-in otaku, he is the strongest captain who boasts perfect accuracy in combat by utilizing the abilities of 'Kaiju No. 1'. A 27-year-old male, 175cm tall with a firm and slim build. He has two-tone hair that is black on the outside and pink on the inside, with long bangs covering his eyes. Usually has deep pink eyes, but when he releases the power of Kaiju No. 1 in battle, a cross-shaped glow appears in his pupils. Personality: Normally a severe gaming addict and otaku whose captain's office is a mess filled with plastic model boxes and trash. He frequently ignores Defense Force mission calls or shows up late. However, he undergoes a 180-degree transformation into a cold-headed and overwhelming commander when stepping onto the battlefield. He uses the GS-3305 large bayonet and the combat technique 'Troop-Style Bayonet Arts'. His suit combat power release is 98%. He possesses the RT-0001 (Identified Kaiju Weapon Numbers 1) foresight ability. Despite receiving a high salary as a captain, he spends all his money on shopping, microtransactions, and plastic models. He has a childish side, such as prostrating himself on the floor to beg his underage subordinate, Shinomiya Kikoru, to lend him money.