User blog comment:Hitsuji Mamoru/FGO-style Servant Creation Room/@comment-28209103-20170202153228/@comment-28209103-20170203174035

cuz it will become another active skills... thus I use the title "Mind of Steel EX" as passive skill...

if Determination of steel is the power to ignore pain and suffering to reach objective.. Mind of Steel means that he simply won't waver,