In order to learn more about Sensei's movements, Mikado and Hiyakawa make a plan to astral project into his house with the help of Mukae, Erika, and Sakaki. But they discover that Sensei's house was built on the site where the Palm of the Hand Research Society used to stand. Mikado recommends that they call off their plan out of concern for Hiyakawa, but Hiyakawa calmly replies "I won't remember. I never forgot."
The most important thing 
is to find Sensei's name.
أهمّ شيء هو إيجاد اسم سينسي
An allererster Stelle steht
das Aufspüren des Namen von Sensei.
Lo mejor sería encontrar
el nombre del maestro.
Lo mejor sería encontrar
el nombre del maestro.
Le mieux, ce serait de connaître
le nom de ce type.
Prima di tutto, dobbiamo trovare
 il nome del professore.
O mais importante é achar o nome do mestre.
А лучше всего — выяснить его имя.