(literary) they

unfriendliness

unfriendly

(collective) brothers / (collective, by extension) siblings / (collective, by extension) brothers and sisters; brethren (brotherhood; fellowship)

suspicion that what appears to be a good relationship between a set of people is a façade for what is actually disagreement

sworn brothers

universal brotherhood

one's parents and brothers and sisters; one's nearest relatives

(collective) siblings

those (referring to things distant from the speaker)