B.I Shadow consist of Fuma, Kento, Kochi, Hokuto, and former member Masaki.
Masaki, Fuma and Kento worked in a drama together called "Scrap Teacher."
Since then, the three were almost always grouped together to perform.
Masaki then left the company due to education/school related issues.
Kochi and Hokuto were then added later.
The four debuted in a project group (not permanant group) called NYC Boys with fellow Yuma and two senpais, Chinen Yuri and Yamada Ryosuke.