small nightwear

小夜着: small nightwear

to go in; to come in / 要る: to be necessary, to be required

to enter, go into, get into a place or a thing / to join a group or organization / to be contained (in), to be included (in) / to be a member of a group, set, category

arrival at a location / (archaic) the wearing of clothing / (archaic) a kimono / (archaic, possibly obsolete) in the area around Edo, short for 巾着切り (kinchaku kiri, “a cutpurse”)

(literary) they (about women or girls)

to obtain, to come into possession, to become available

to be proficient, skilled, experienced

ashamed and unable to show one's face

"to enter the head": for learning to stay in one's head