[/spoiler]Wow OP that's quite an eye you got there! I never paid it any mind!
@Helepolis, who is it then? I too am curious now! xD
Who is it? Who could it be? I am awaitig as well for the,if possible,"enlighting" .
My guess from the Full Silhouette is https://en.touhouwiki.net/wiki/SinGyoku
the 3 Forms of PC-98 SingGyouku (1st Touhou Boss,Touhou 1 HRtP )
!