Akane Hiura serves as a B-rank Sniper and ex-member of Nasu Squad, recruited by Border two years before Yūma Kuga and Chika Amatori. Scouted by Yūko Kumagai, she trained under Tōru Narasaka at Rei Nasu’s recommendation, earning distinction as Border’s youngest female Sniper until Chika and Izuho Natsume joined.

Her parents’ decision to leave Mikado City post-Aftokrator invasion led her to skip a pivotal Rank War strategy session in a futile attempt to halt their relocation. This fueled her resolve to help Nasu Squad climb B-rank’s upper tier before her departure. In battles, she showcased tactical adaptability—crumbling structures with Meteor cubes for tactical advantages or switching to Ibis for lethal precision. Her steadfast refusal to bail out against Yūma impressed Yūichi Jin, underscoring her fortified resilience.

Though cheerful and approachable, Akane harbors emotional sensitivity, tearfully lamenting her impending separation from teammates. She idolizes elite Snipers like Narasaka, cherishing her mentorship. Joint training sessions with Chika and Natsume highlight her playful camaraderie, including feline-themed humor and lighthearted envy when a cat favored Isami Tōma.

During her farewell Rank War, Akane lured enemies by sniping from exposed low ground, securing Nasu Squad’s survival victory and their promotion. After naming Natsume her successor, she bid heartfelt goodbyes, thanking Narasaka for his guidance.

Her vibrant red twin tails, magenta eyes, and signature purple cabbie hat complement a futuristic white uniform adorned with Border’s emblem, purple gloves, and knee-high boots. Beyond combat, she enjoys collecting hats and indulging in soft-serve ice cream. Unbeknownst to her, Akane is the younger sister of Kumagai’s classmate, who harbors unspoken feelings for the Border agent.