Rainfall

Rainfall is Bert's ex-best friend and the 2nd protagonist of Arc 1. Rainfall has glossy blue fur, and a tail made of running water, similar to a waterfall. Rainfall got extremely angry at Bert and claimed he was becoming far too distant. She was heartbroken when she found out Bert had run away, because she was going over to his house to apologize when he did. Rainfall currently resides in a cave behind a waterfall.