Genta Kojima, a Teitan Elementary student and founding member of the Detective Boys, proudly asserts leadership of the group despite his peers frequently relying on Conan Edogawa’s sharper deductive instincts. His family’s liquor store, "Kojima Liquors," anchors his upbringing, alongside an uncle in Gifu and a father, Genji, whom Genta idolizes for embodying the steadfast "Child of Edo" ethos. Brash yet kind-hearted, Genta navigates life with a voracious appetite—most notably for braised eel rice bowls—and measures financial worth by how many eel meals it could buy. His boisterous enthusiasm spills into frequent food-themed verbal blunders and struggles with basic kanji, inviting occasional teasing. Though impulsiveness and obliviousness sometimes endanger the Detective Boys, his loyalty and reliability cement his friendships with Ayumi Yoshida and Mitsuhiko Tsuburaya, tinged with quiet jealousy when Ayumi favors Conan. Genta’s burly frame proves vital in investigations, smashing barriers or retrieving clues, while his school shoe locker doubles as a case-request hub. Notable exploits include unraveling a haunted mansion’s secrets, recovering stolen Italian gold coins, and clearing his father’s name from false accusations. He mockingly dubs Conan a "follower" yet tacitly defers to his rival’s intellect, while maintaining respectful curiosity toward the enigmatic Ai Haibara. Authority figures like Kogoro Mouri earn irreverent nicknames, reflecting Genta’s cheeky boldness. Non-canon adventures thrust him into kidnappings, treasure hunts, and explosive crises, where his courage and teamwork shine—even when his mishaps escalate tensions. Trivia notes reveal his name’s roots in mystery author Hajime Komine, blending "origin" and "plump" kanji. A suspected shellfish allergy, hinted by Haibara, lingers unconfirmed. Officially documented at 40 kg and right-handed, Genta’s presence blends chaos and heart in equal measure.