So as you said

You went on a stroll and you fell here due to an ambush

Yes...I didn't even notice it

Reimu's work...? No Marisa likely did a random attack for fun

Or was it that other spellcaster...? They are getting sharper

AH!?

The red and white one didn't do it

Umm what about her? The one in the attic

Ah,yes

That girl--

Well she's just a parasite who settled here

I knew you'd say that!