Maho Akashi, operating under the pseudonym DJ Mash, is a high school student and amateur DJ. She attends the class adjacent to Rinku Aimoto, who first introduced her to DJing, sparking their collaborative performances. As the main DJ and vocalist for the DJ unit Happy Around!, Maho actively participates in their shows. Her character grapples with moments of self-doubt about her abilities, often leading her to seek feedback from fellow Happy Around! members regarding perceived shortcomings in their performances. This introspection sometimes drives her to explore new creative avenues, such as experimenting with different instruments to broaden the group's musical range.

Physically, Maho stands 159 cm tall, weighs 47 kg, and has blood type A. Her birthday is September 20. Her distinctive traits include piercings and the frequent use of headphones, consistent with her musical pursuits. Her interactions within Happy Around! consistently demonstrate a commitment to collaborative growth as she navigates the challenges and rewards of DJ performances with her peers.