Nny had marked him.
It was not, as one would expect, an entirely unpleasant discovery. Teatime had been well aware that Nny's knife had gone far enough into his skin to scar, and that was only if you counted his back. The ears and the bite marks were relatively normal (if you considered such things on par with any kind of normality, which Teatime did) but when he'd managed to find an empty bathingroom for a hot soak and some well-deserved healing time, a glance in one of the large mirrors had given him quite a shock.
"Nny," written in spiky, large letters, all across his back. It was scarring now, and Teatime still didn't quite know what to make of it. His first thought, much to his surprise, had been something along the lines of a rather girlish and excited 'Ooooh!' As if he'd been presented with a bouquet of flowers or a box of Very Expensive Chocolates. In his recollection, deep scarring was not generally something that provoked that kind of response. However, living in a place that put the Unseen University to shame in the realm of the absolutely weird, well... the 'Ooooh!' had happened, and there was nothing he could do about it.
Except, perhaps, to find Nny with some form of reciprocation. Their second encounter, to his mind, didn't count yet due to its spur-of-the-moment nature. A 'thank-you' the scope of which Teatime wanted to give required planning and timing.
The planning he had down, easy. Plans came to him like butterflies to nectar. The timing, in fact, was now.
He had dressed well for the occasion, finding along with his old bedroom a suit of clothing in assassin black but with what people in this world considered a fashionable, modern cut. An assassin always dressed to impress. With him he had two daggers, standard size and above-standard sharpness, for the occasion. And, at this moment, he had in his hand a set of lockpicks, which he was employing the use of on what he now knew to be Johnny's bedroom door. As long as he had guessed the timing right (and, as his eye and ears told him, he had) this 'thank you' would be one of extreme, special remembrance.