Study
Den, Library
noun
しょさい
図書館 （としょかん） Library
書斎 （しょさい） Study, Den, Library
書庫 （しょこ、not on WK） Library, Book Storage, Stack Room
Study as in home office or reading room. This refers to the room, not the activity.
He sits in his Study 書斎 and writes 書 to purify 斎 his mind and soul.
Show しょ the cyborg さい to the Study so he can fill his memory banks.