[Watanuki would have asked how Merlin could even write those characters if he didn't know the magic, but he suspected that it didn't matter. Not with that question that was posed shortly after.]

How would I know? My parents are dead, and I didn't exactly ask them before they died.

[That was the simplest explanation. How could he know? His parents had died when he was eight. And back then, he hadn't even told his parents he could see ghosts yet. He had barely understood what had been happening in the first place. And because of that, he...

He. Hmm.

Watanuki frowned as he puzzled over that thought. Had he talked to his parents about seeing ghosts? He tried thinking back, trying to recall if they ever had that conversation in his younger years.

As he thought of that, Merlin would feel a strong pulse of magic rather abruptly. It was magic placed on Watanuki, that had been there since before the boy had arrived in the garden. It was Yuuko's magic, Merlin would be able to recognize it as such, and the more Watanuki tried to think back the stronger the magic got. And it was giving Watanuki a headache, as evidenced by the way he flinched and reached up to cradle his forehead.]

We...didn't talk about magic ever, I don't think...?