Yagyu Suou is a cursed humanoid weapon. He is someone from the Yagyu bloodline; given this he has higher concentration, speed, strength and other abilities.

He meets Ame who saves him and he decides to follow her because of it, and when Ame praises his beautiful sharp blue eyes, he develops romantic feelings for her.

In the end, he survives. Elsewhere, Ame is nowhere to be found, but there is a hint that Ame herself became one with the sky.