Tekkamen-san

鉄仮面さん

Tekkamen-san
Tekkamen-san鉄仮面さん 
Visual novelsSide character - Pastel Chime Continue

Other instances

Tekkamen-san
Tekkamen-san鉄仮面さん 
Visual novelsMakes an appearance - Pastel Chime 3 Bind Seeker