Masaki is living a regular high school life in Shonan while staying at the home of legendary board shaper Tadao. In the early mornings, he goes out to ride the waves with Kosuke and Yuta. Then, he goes to school. After classes, he goes back to the beach. Day after day, he lives a life of contentment, immersed in surfing. Amidst all of this, little things that Masaki does pile up, angering Kosuke. Unable to let go of his indignation, Kosuke challenges Masaki to a surfing match...
And your board's angle 
of incidence to the wave...
...وزاوية سقوط لوحك نسبة إلى الموجة
Und was den Winkel
vom Brett zum Meer angeht …
Y en cuanto al ángulo de tu tabla…
Y en cuanto al ángulo de tu tabla…
Quant à l’angle de ta planche…
E l'angolo di incidenza della tua tavola...
E usar o ângulo da prancha com a onda...
И угол между твоей
доской и волной...