Chapter 1

when Rin turned twelve he thought it would be a normal year as usual but no. Every year in spring Rin's demon features would appear for a month. This was because Rin could not escape his mating season even if his powers were locked away. Rin had a certain little twin brother to help him but not so much of a father to rely on when he found out...

WARNING! This will contain the following:
Smut will be in most chapters
Cursing

Disclaimer: I do NOT own Blue Exorcist/Ao No Exorcist or the cover