31-8520 (サイノハコニワ) forms in Kyushu (九州)九州
V: Yukichi (ユキチ) G: Kou G: Tama (玖) B: Saemaru (さえまる) D: Mu (むー)
First live is held at Kumamoto (熊本) B.9 V2.
The band loses contact with vocalist Yukichi. Bassist Saemaru acts as bassist and vocalist for this performance
Yukichi is officially fired. Saemaru switches to vocalist
V: Saemaru (さえまる) G: Kou G: Tama (玖) D: Mu (むー)
Vocalist Aoi (葵) joins.
Saemaru (さえまる) switches back to bass.
V: Aoi (葵) G: Kou G: Tama (玖) B: Saemaru (さえまる) D: Mu (むー)
Band joined GLK MUSIC and changed their name into SAI NO Hako Ni WA ~31-8520~ (サイノ筐ニワ~31-8520~)
SAI NO Hako Ni WA ~31-8520~ (サイノ筐ニワ~31-8520~) was booked to perform at the CROW MUSIC event KANSAI ROCK SUMMIT '21 EXPLOSION CIRCUIT VOL.8 , but it was cancelled due to COVID-19.
Sponsored event Chuushuu no Meigetsu, Aki NO YomawaRI (中秋ノ名月、秋ノ夜廻リ) is held
A second festival, KANSAI ROCK SUMMIT'21 REVENGE!! EXPLOSION CIRCUIT vol.9 is held in lieu of the earlier attempt getting cancelled.
Two-day sponsored event 『Saihate ni Yomawari Are. (最果てに夜廻り在れ。)』 is held.
Sponsored event 『Saihate ni Yomawari Are. (最果てに夜廻り在れ。)』 day 2 is held.
SAI NO Hako Ni WA ~31-8520~ (サイノ筐ニワ~31-8520~) disbands
SAI NO Hako Ni WA ~31-8520~ (サイノ筐ニワ~31-8520~) was a visual kei band in Kyushu. They were part of the menhera kei subgenre. They were active from 2018 to 2022 and are now disbanded.