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."
They're the types that 
neither harm nor heal,
،إنّهم أشخاص لا يؤذون أو يشفون
Zwar sind sie nicht schädlich oder hilfreich,
No me hacen ni bien ni mal,
No me hacen ni bien ni mal,
On se fait pas de grandes confidences,
Non hanno influenze positive o negative su di me,
Elas não machucam nem curam,
Они как бы ни плохие, ни хорошие.