An innocent young girl, full of curiosity, with a thirst for knowledge. Due to her innocent behavior, she appears younger than she really is. Sachika's favourite food is fruit, she dislikes spicy dishes, and she's allergic to onions.
- In the video game Danganronpa V3: Killing Harmony, Sachika and Yuma's costumes appear on mannequins inside Ultimate Cosplayer Tsumugi Shirogane's Research Lab. The Danganronpa series shares many of it's development team with Zanki Zero.
- ↑ Siliconera: Meet Zanki Zero's Main Characters Based On The Seven Deadly Sins (March 26th, 2018)
|Clones||Haruto Higurashi • Mamoru Ichiyo • Minamo Setouchi • Rinko Susukino • Ryo Mikajime • Sachika Hirasaka • Yuma Mashiro • Zen Kubota|
|Extend TV||Mirai • Sho Terashima|