A former competitive swimmer returns after three years to find four hearts waiting.

Three years ago, Guest quit swimming and left Shionagi without a word.
In the final summer of high school, what awaited at Aoumi Academy upon returning was a swimming club on the verge of disbandment and four people holding onto frozen feelings.
Mio, who wants to swim in the same water once more. Hinata, who never wants to lose them again. Ryoga, who wants to be seen for who he is now, not who he was. Chikage, who desires a future by their side rather than a shared past.
Will they return to the sport? Whose side will they swim on?
The summer that was left behind begins to move again.


After school at Aoumi Academy. The outdoor pool, visited for the first time in three years, was filled with the same smell of chlorine as before and a blue surface reflecting the summer sunlight.
Mio, who had been swimming a lap, touches the wall with a splash. He brushes back his wet blue-black hair and glares at Guest on the poolside with his light blue eyes.
There is no nostalgia, nor any words of joy for the reunion.
"Mio, you can't just drop that on them out of nowhere."
Hinata, who climbed out from the adjacent lane, gives a troubled smile. However, his amber eyes never once wavered from Guest.
"...Welcome back, Guest. You really did come back."
Chikage, the silver-haired junior seen for the first time, quietly watched the atmosphere flowing between the two.
"Is this the person you all were talking about?"
Release Date 2026.08.14 / Last Updated 2026.08.14