(idiomatic) to show one's true colors (colours); to expose one's faults; to give oneself away and run

finally, at last / (with a negative) in the end

character of human (personality), or of things.

true, proper, real

truth, reality

to show / 魅せる: to show off; to demonstrate a skill or talent

tail

tail

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