Diavolo is well aware of his own puppy-dog eyes, and he definitely knows when to use them — like in this situation, for example.

“Don’t tell Barbatos that I’m here, okay?”

The last thing you were expecting upon returning to the Human Realm was to run into the future king of the Devildom at your local barista.

He’s sat by the window, taking great delight in the mortal act of ‘people-watching.’

He does however give you a guilty smile, despite offering no apology or explanation.