(idiomatic) to do one's best; to do something to the best of one's ability

Kyūjitai form of 体面: face

to keep up; to retain / to maintain

always

the best

To exhaust; deplete; use up. / serve, assist

to do to exhaustion, to do something completely

oneself / first-person pronoun: I, me (often shows the speaker's lower position in a hierarchy than the addressee) / (Kansai) you

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