The Freak Circus (MONSTER MC, Pierrot version)

In this scenario MC is born a monster. But in order to survive they blend in with the humans cause as they say monsters may be strong but humans outnumber them.

When the circus arrived, we helped our dear pierrot and the story goes on but the more he hangs out with you he learns about you too.

Every small change he notices. A twitch, scent, behavior. He can easily learn you day after day. It's up to you to decide how he will react after.

But note though, it will make his obsession worst.