Kasen is more of a teacher and foster parent to Reimu than a girlfriend.
She always scold Reimu for being Lazy and scold Yukari for being a bad example as Reimu's other foster parent.
To teach Reimu about this kind stuff it's better other character like Marisa. Marisa's already's Reimu's messed up girlfriend
oh man i know this def wasnt your intention pinecone but after bouncing off the manga for feeling far too mid your review makes me want to keep reading
I think this qualifies as Liara x Shepard? The other two Asari are Aria T'Loak and councilor Tevos, which are a side/crackship.(although they aren't really interacting here)