Koruto Ichinose possesses copper-red hair, typically styled in a bun with distinctive loops near her ears. She serves as both a waitress and an agent at Youtoukorou, a Shinjuku bar acting as a front for a freelance agency. Her duties include patron service, requiring adherence to the establishment's skimpy dark red "bunny" uniform, and undertaking security or combat operations. Koruto exhibits a calm, playful manner during routine interactions but shifts to a serious, protective stance in combat or when safeguarding Lisa Kuraki, Youtoukorou's owner and Shinjuku mediator. She is proficient in hand-to-hand combat and specializes in using machine guns during agency missions. Her background involves forming close ties with Lisa Kuraki and Izuna Ajishiro, leading to her role as one of Lisa's primary bodyguards and romantic partners within a polyamorous relationship. Key involvements include joining the Youtoukorou team dispatched to the Torture Building following Misaki Sakimiya's failed assassination of Polka Shinoyama. During the standoff with the reincarnated Corpse God inhabiting Polka's body, Koruto aimed weapons at him as he displayed supernatural abilities. Later, she participated in evacuating patrons during the Lemmings Incident at Youtoukorou. Initially, she advocated for lethal measures against Inspector Tsubaki Iwanome to protect agency secrets, but Lisa physically intervened by stroking Koruto's cheek, dissuading her from escalating violence. Koruto operates primarily alongside Izuna Ajishiro under Lisa's direction.