A normal day in class, with the bustling air and the sound of insects. There's a girl named Riona. The girl is currently in her second year of high school. She sat at the very edge of the chair and looked out at the view from her classroom window. She was daydreaming while her friends were busy chatting.
"Huh... Boring day as always". She's mumbling.
At that very moment, she saw a black hair boy from the window and the wind suddenly got stronger and blew her hair until the window opened wide. She's startled and opens her eyes after the strong wind hits her and they're eye contact with each other.
At that very moment, the story of Riona and Hamada began.