Souzou Renkinjutsushi wa Jiyuu wo Ouka suru: Kokyou wo Tsuihou saretara, Maou no Ohizamoto de Chouzetsu Kouka no Magic Item Tsukuri-houdai ni Narimas…

[MangaDex]

 

[EchoGirl]

i wonder if we'll see his face, mask designs are cool tho idk if there's a deeper meanin for it to be hidden