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."
because he doesn't have 
anywhere to return to himself.
لأنّه لا يملك مكاناً يعود له بالأصل
Er hat nämlich selbst keinen Ort,
an den er zurückkehren kann.
Porque él no tiene un lugar así.
Porque él no tiene un lugar así.
parce que lui-même
n’en a jamais eu.
Perché lui un porto sicuro non ce l'ha.
Porque ele mesmo não tem um porto seguro.
Ведь ему самому некуда возвращаться.