awake at night and asleep during the day

day and night

reversal / comeback; coming from behind

reverse

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

live a life

life; livelihood; daily living.

imperfective and stem (or continuative) forms of 送る (okuru) [ichidan]