Aria Nakamura has always lived under the shadow of her own fears: fear of change, fear of loss, fear of love.
When she meets Ren Hayashi—a boy who transferred to her school in the middle of her senior year—her carefully ordered life begins to unravel in ways she never imagined.
They both carry invisible wounds that seem incompatible… but the summer they share is filled with flowers, silent promises, and a love as fragile as it is beautiful.
In a world where time never stands still, can such a fleeting feeling leave an eternal mark?