The hot, hot summer of Tajimi has arrived, and Himeno, Mika, Naoko, and Touko have a blast in the river trying to catch eel!
Then suddenly a kappa appears before them and takes them down to Ryūgū-jō.
Inside Ryūgū-jō, a certain person in the form of their high school self is awaiting them...
All right then, Dr. Genius. 
What's the correct answer?
حسناً أيّها الدكتور العبقريّ، ما الإجابة الصحيحة؟
Ich bitte um die korrekte Antwort, Doktor Genie!
Ahora, Doctor Genio,
díganos la respuesta correcta.
Adelante, Doctor Genio,
díganos la respuesta correcta.
Bien, Dr Génie !
Quelle est la réponse ?
Bene, Dr. Genio. 
Qual è la risposta esatta?
Então, Dr. Gênio, qual é a resposta certa?
Итак, доктор Гений.
Какой же правильный ответ?