Shouta is troubled over how to approach Lucoa about her daily, uninhibited contact. He should be the master in their relationship, though... He resolves to take back control as the full-fledged mage he's aiming to become. So he begins trying to uncover Lucoa's weaknesses.
That's the only reason I let 
you give me a nickname.
هذا السّبب الوحيد الذي جعلني أسمح لك بمنحي لقباً
Das ist der einzige Grund, warum ich dir erlaube,
mich mit einem Spitznamen anzusprechen.
Solo por eso dejé
que me pusieras un apodo.
Solo por eso dejé
que me pusieras un apodo.
Je tolère ce surnom
uniquement pour cette raison.
E questo è l'unico motivo per cui 
ti ho concesso di darmi un soprannome.
Foi por isso que eu te
deixei me dar um apelido.
И поэтому же позволил тебе
звать себя Фафом.