"I'm sorry, did you say 'her'?" This threw Yuki for a loop. He didn't know too much about the tree let alone that it had a gender. But then he heard the other's explanation. And that answered a question..sort of.

Erdrea must be where the other boy in his house was from, though obviously, Yuki hadn't ever heard of it. But still, he could admit that he was curious.

"Then what does the root look like?" Yuki could at least try and help. After all, he'd helped students back home.