There's a side story about Tsubasa and Toudou that you can read here! - http://myreadingmanga.info/naono-bohra-kocchimono-no-konwaku-eng/
I hope it's not here on this website, or this comment would be rather pointless...
The story about the water spirit kind of reminded me of another manga I read once about a bunch of spirits going to school together, and I remember that one of the characters was a water spirit but I don't really recall all that much... Does anyone know what I'm talking about? I really want to reread it...
its Monster Petite Panic by kanda neko
I was kinda expecting and really looking forward to a side story about Kadokura and the guy with glasses, but there wasn't one.....
Interval Zero is the story about Kadokura
I see! I'll be sure to check that out, thanks :)