letter of reply, written response (to a letter etc.)

write back, write a reply

(especially, undesirable) change in nature (性質)

to change (especially, undesirably) in nature

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

poetry, poem / (archaic) Chinese-style poetry / modern Japanese poetry

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

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