(collective, literally) a thousand nights / (archaic, figuratively, collective) lots of nights; an innumerable number of nights

a female given name

(Internet slang, humorous, pun) Christmas Eve, as a night of sexual activity between young couples

二胡: erhu

北: north

past tense form of きる / past tense form of くる

肝: liver, courage

着手: a dresser: someone who puts on clothing / 来手: someone who comes (to do something)

来て: the conjunctive form of the verb 来る (kuru, “to come”)

今回: this time