He wanted to joke that danger was his middle name, except he had no idea if he had a middle name or what it was. But it was the healing potions that actually got his attention.

"Potions? The hell are healing potions?" Or healing in general. Was that a thing? Though, he supposed if he thought it through, the amount of people he'd met who claimed to know magic of some sort, it made some sense...

"Uh, right, yeah, like I said, no need to worry." Duo smiled, more genuine this time because he could see that Sarai had genuine concern for him. "I'll be careful."