While Kazuya desperately tries to get Ruka to promise she won't reveal his secret, she tells him her own.
Even if you're serious, telling him that out 
of the blue is only going to throw him off.
حتّى لو كنتِ جادة، كلامك هذا سيُوتّر كازويا-سان فحسب
Selbst wenn du es ernst meinst … Indem du ihn
so überfällst, bringst du ihn nur in Schwierigkeiten.
Y aunque hables en serio, es normal
que no sepa reaccionar a tal capricho.
Y aunque hables en serio, es normal
que no sepa reaccionar a tal capricho.
Même si ce que tu dis est vrai,
Anche se fai sul serio,
Mesmo se você estiver falando a verdade,
só vai deixar o Kazuya-san mais confuso.
Даже если ты сказала правду,