Can anyone translate this? It seems to be some kind of prelude that was skipped when the rest of the series was translated.

BTW, in this series are credited "by naminami", so either minamina is missspelled or there are two different authors, so before starting all the re-tagging, which will be the correct one to put?

I thought it's naminami, I'm not sure which things are done by "minamina", if there's an author by that name?

Anyway quick translation:

Akyu: "A long long time ago, there was a certain full scale war between humans and yukkuris..."

Koreimu (left): "Yukuchi! Reimu is looking forward to it!"
(right): Yuyu! Reimu will listen to big sis's stories easy!"

Big Reimu: "Big sis's stories can take it very easy~!"