Hayato wants to get Shiragiku a birthday gift, even though he's two weeks late. Akane helps him choose one, and on their way home, he remembers that today is Akane's birthday. He offers to buy her a gift as an apology, but she only wants one thing...
Seriously, what are you talking about?
بجدّية، عمّاذا تتكلّمين؟
Echt jetzt, wovon redest du?
En serio, ¿de qué hablas?
En serio, ¿qué dices?
É sério. Do que você tá falando?
Серьёзно, ты о чём?