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."
but this place is beyond "not very 
lived in." It just looks vacant.
لكنّ لا يبدو أنّ هذا المكان يحمل آثاراً
للعيش فحسب، بل فارغ
Das hier ist wie ein leeres Haus
ohne jegliches Leben.
Sembra una casa abbandonata, 
non dà il senso di essere stata vissuta.
mas aqui está mais para uma casa
vazia do que "não muito usada".