Reisen: Hey, Eirin.
Eirin: Yes?
Reisen: How exactly did you manage to design these Lunactic Eyes repressing glasses anyway?
Eirin: Oh, those? I had help.
Reisen: Really?
Eirin: Oh yes. Went to Japan to find this girl with red hair, took me awhile but I found her, help me construct them. We made two pairs, she kept one, said that someone needed them. Haven't seen her in awhile, should fix that.

I never expected my original comment to be given VD like that, since I was originally speculating from the data given from Perfect Memento in Strict Sense. She would need those glasses to counteract her lunatic eyes.

Still my original opinion does still stand that Reisen does indeed look wonderful in Seihou (western) clothes, as does Reimu.

Though honestly, some people need to be less uptight since my post was safe in the comment guidelines.