Ako has chuunibyou tendencies, which Shirokane Rinko supposes results from her playing online games. She often wonders how she can be a "cooler" drummer, and sometimes feels inadequate compared to her other bandmates. She admires Minato Yukina, is the best friend of Shirokane Rinko, and the little sister of Udagawa Tomoe. She looks up to her sister, and started playing drums because she wanted to be as cool as her sister. She always is researching ways to be cooler, and started using weird words as a side-effect.