Binan High is throwing their annual swimming contest! But while the rest of the students throw themselves into flashy swimsuit selection and healthy competition, one boy remains an outsider, lamenting his inability to swim.
That which is unbreakable is truly strong!
!ذلك الذي لا ينكسر قويّ جداً
Nur das Unzerstörbare ist wirklich stark!
¡Lo que es irrompible
es realmente fuerte!
¡Lo que es irrompible
es realmente fuerte!
Plus fort que toutes les choses
à conquérir, Ritter Diamant !
Ciò che è indistruttibile è davvero forte!
Aquele com sua força 
 realmente inquebrável!
Сильно то, что нерушимо!