Plot
Sosuke Yamazaki, Rin's childhood friend, transfers into Rin's school with one goal in mind, to swim once more against his friend, even though he suffers from a horrible injury.
Where to watch Free!: Timeless Medley - The Promise?
Free!: Timeless Medley - The Promise is an anime movie featuring Mamoru Miyano.
Free!: Timeless Medley - The Promise is currently streaming on Funimation Now.
It is also possible to buy Free!: Timeless Medley - The Promise on Amazon Video and Microsoft Store.