This takes place a while after the Mephyland incident. Rin notices a strange black tattoo that glows a faint blue when he's near demons. Yukio finds out and tells him the meaning of the 'totally cool' tattoo.
"When you called and said you needed me in Assiah, I didn't think this was what you had in mind." "Trust me, Amaimon, it very much wasn't, I had no idea he was even capable of these heats." Rin's issues happen to include more than being in a tug of war between the two halves of himself. Now, they include demonic hormo...