Chizuru is, by nature, not a very patient person.
She's used to being in the thick of things; always on the go and living life on the fast lane, so to speak. She's a bundle of nerves and energy. When something needs to be done, there's neither the right time nor place for appropriate action. She believes that there's no use waiting for things when you can run after them in the first place.
And so she runs, and runs, and runs still, until she can catch up with Tooru and be with him again. His warm smile and soothing presence are what keeps her going; that one day, he will realize her feelings for him and love her in return.
She never loses hope, even if Tooru's always running away. She's always running after him anyway.
Until today.
Ryuu is nothing if not patient.
In fact, if he is so inclined to enumerate his greater attributes, his extreme patience would top his rather short list. For him, every moment has its moment, and every scene has its part. He doesn't like to rush things. He's mastered the art of waiting perfectly, and it has yet to fail him.
And so he waits, and waits, and waits still, with unwavering patience, until Chizuru realizes that he's in love with her. He has known for quite a while that it would come down to this sooner or later: Tooru being engaged, Chizuru getting heartbroken, and him having to fix things up.
It's a mirror to the cycle that never ends. Tooru's always running away. Chizuru's always running after him. While Ryuu…
Ryuu is always waiting. Even now, he waits. And he will continue to wait, until Chizuru is tired of waiting for another person, her heavy heart always running after him.