a boast of one's strength / a person who boasts of his or her own strength

pride

brag, boast

Alternative form of 留める

to stop / to park / (calligraphy) to write as a thrown stroke to the bottom right (㇔)

to stop, to terminate, to cease, to discontinue, to quit / to abolish, to do away with

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

strength / power / force

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