Akane Egusa (Hero Retold)

Akane Egusa is a supporting character in Hero Retold: Kamen Rider Shinobi. A very close friend of Rentaro Kagura, she serves as his confidant in his activities as a Kamen Rider, while also running the courier group Nin-Nin Delivery Service, which Rentaro is also employed under. She, however, would be forced to become the first Yami Nin-Ju under the experiments of Niji no Hebi

Before Hero Retold
Prior to meeting Rentaro, Akane was a former resident of Futo City with her father, before she moving to Tokyo in order to establish her own career path. However, she would immediately (and comically) encounter the Niji no Hebi Clan upon her first day in the city. Though she would be saved by Kamen Rider Shinobi shortly after, she would also accidentally learn of his true identity, thus inadvertently getting dragged into Rentaro's missions. Eventually, she'd adapt to becoming Rentaro's confidant, while also using this opportunity to find the Nin-Nin Delivery Service to act as Shinobi's base of operations, while also running a true courier business that makes use of Rentaro's ninjutsu skills.

The Crimson Year & Konjo Employee
When the Konjo Group was ransacked by a Nin-Ju in early 2025, Rentaro brought Iroha in their courier business to temporarily work under Akane while their offices were being repaired. Akane offers Iroha ice cream to make her feel better, while she tries to settle her into her temporary job.

Days later, a twist of irony happens as both Akane and Rentaro find themselves working under the Konjo Group after their Delivery Service got ransacked by Anti-Ninja protesters. While working under Iroha's supervision, Akane helps with the upcoming grand Event for the Konjo Group's shareholders, even getting dragged into Iroha's plan for a secret idol stage performance.

Turning into a Nin-Ju & Recovery
During the height of the Konjo Group's event, she, Iroha, and Mina go backstage to prepare for their performance. However, a Nin-Ju attack took place in the halls, while they were blindsided by Dustards in their dressing room, getting herself kidnapped by the Niji no Hebi clan by accident. When the Yaminin expresses his disappointment over kidnapping the wrong girl, Akane was instead used as a test subject in the clan's experiments. During the raid mission led by Rekka, Rentaro finds Akane and rescues her, only for the Crimson Year's Moon to manifest, forcefully transforming her into the first Yami Nin-Ju and attacking Rentaro, before getting attacked and eventually overwhelmed Kamen Rider Bakugo.