a surname

koto: a Japanese zither derived from the Chinese guzheng / (colloquial) guzheng: a Chinese zither on which the koto was based

friend

To blow (such as an instrument)

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

(polite) first-person singular pronoun: I, me

a personal or private matter / (by extension) selfishness

a personal or private matter / selfishness / privacy, secrecy / (women's speech, obsolete) a brother-in-law

personal, private / secret

(formal) first-person singular pronoun: I, me