It's the day of the Master and Queen challenger finals. Dr. Harada and Arata are competing for the chance to challenge the master, while Inokuma and Megumu battle it out to challenge the Queen. Harada confides in Arata that he once played against his grandfather, Eternal Master Wataya Hajime, and expresses his joy at being able to play karuta with Arata. A passionate battle spanning multiple generations begins at last!
moving his arm as little as possible 
to avoid building up inertia!
يحرك ذراعه أقلّ ما يمكن لتجنّب رفع القصور الذاتي
bewegt sich nie zu stark,
um Trägheit zu vermeiden.
Sans faire un mouvement complet,
sans créer d’inertie…
muovendo il braccio il meno possibile,
movendo seu braço o mínimo 
possível pra evitar a inércia!
старается поменьше двигать
рукой, чтобы избежать инерции.