I'm pretty sure she wrote&composed Kagami-iro
And yeah, I hope to see her write more lyrics in the future too!
About the song, I really like it! I had never heard Tatsuya Ishii before, but I actually liked his vocals in this song~ I think I'll enjoy Samii's solo version more though. (there are solo versions in the single, right?)
Anyway, I thought the PV was TOTALLY UNFAIR XD I waited sooo long for it to come out so that I could listen to the full song, and turns out it's just a short version XD Evil, evil!
I downloaded the PV, and I'd upload it... but it's really late here right here and I think I'll be going to bed now XD But if no one uploads it 'till I log in tomorrow, I can upload it~