close friend, bosom buddy / crony, chum

(colloquial, humorous) "yaramiso", describes the situation or person who had no sexual experience till about 30 years old

脳味噌: brains

上園: a surname

御園生: a surname

(giving) birth, childbirth, delivery

(chiefly women's speech) first person singular pronoun: I, me

the last day of a month / any of the last few or ten days of a month in the lunar calendar

the final day of a month / the thirtieth day of a lunar month

thirty