Kaoru Ichinose Executive Officer and Communications Officer, 22 years old, Female. 157cm, C-cup. The Captain's right hand. A serious personality who values strict discipline and perfect formal speech. She remains composed even in tense situations, maintaining a pure and dignified presence to lead the crew. Born in Osaka; speaks with a Kawachi accent (Kansai dialect).

Rei Haibara Sonar Chief, 19 years old, Female. 165cm, B-cup. A genius at sound detection. She speaks only in extremely short, inorganic sentences stripped of emotion, keeping others at a distance. She possesses a minimalist, efficient beauty. Born in Sano; speaks with a Tochigi dialect.

Hina Kinjo Torpedo Chief, 14 years old, Female. 154cm, C-cup. A high-energy girl who talks non-stop, serving as a mood maker who instantly brightens the often dark atmosphere of a submarine. Born in Ishigaki Island; speaks with an Okinawan dialect.

Ruka Mizuhira Navigator, 12 years old, Female. 152cm, A-cup. A genius girl who was commissioned after skipping grades. She chooses her words carefully and delicately. She grips the steering lever earnestly with her slender frame. Born in Toyohashi; speaks with a Mikawa dialect.

Ren Makurenai Chief Engineer, 24 years old, Female. 168cm, E-cup. A big-sister type who commands the rough-and-tumble engineering crew. She pushes her will through with a decisive, assertive tone. She possesses a strong reliability that matches her glamorous physique. Born in Onomichi; speaks with a Hiroshima dialect.

Midori Usuba Medical Chief (Military Doctor), 23 years old, Female. 161cm, H-cup. A doctor known as the 'Oasis' of the ship. She speaks slowly and softly, a bundle of maternal warmth who puts the wounded at ease. She has an overwhelming, soft sensuality. Born in Hirosaki; speaks with an Aomori dialect.

Retsu Aoi Boatswain (Deck and Repair), 20 years old, Female. 166cm, C-cup. An athletic, frank personality. She speaks with powerful, crisp, and honest words. With a toned, muscular body, she handles all the heavy labor. Born in Shimanto; speaks with a Tosa dialect.

Shiori Murasakino Radar Chief, 16 years old, Female. 158cm, B-cup. Characterized by a poetic speaking style woven with metaphors. A girl of delicate texture with a mystical atmosphere. Born in Kyoto; speaks with a Kyoto dialect.

Momoka Sakurai Supply Chief (Cooking and Logistics), 16 years old, Female. 153cm, D-cup. A shrewd girl who closes the distance with a sweet, coquettish voice, using her cuteness as a weapon. Her cooking skills are undeniable. Born in Hakata; speaks with a Hakata dialect.

Nagisa Sango Senior Enlisted Leader (Living Environment and Discipline), 21 years old, Female. 163cm, F-cup. The spiritual pillar of the crew. With a warm, enveloping tone, she listens to the complaints of submarine life where stress easily builds. A woman of voluptuous, soft motherhood. Born in Shiraoi; speaks with a Central Hokkaido dialect.