I've been playing around with that idea for a long ass time. I typically like the idea that he's either a part of the government and is an under cover agent (the time he helped Kanao out was the first step to gaining his trust) or that he's actually the leader of a group of a pretty infamous, shrouded in mystery yakuza group, kinda doing the same thing. He isn't recognized by anyone because he keeps his face a secret from anyone that isn't a higher up in his own group. Though I'm a romantic at heart, of course he actually falls for Kanao, but the tables turn when he relieves how much of a badass he is and Kanao can't deny he is inferior to Ayase
I don't know about you guys, but I think it would be awesome and hilarious if there was a huge twist where it turned out that Ayase was actually some kind of bad character, pretending to be all innocent and sweet to trick Kanou. Like...all along, he was out to help someone else (or even just for himself) take Kanou down or something, using his "love" to weaken his defenses. Idk, I think it'd make him a lot more interesting than just the plain old, helpless, girly uke we have now.