no you guys look

Miley sings that she came in like a wrecking ball to break the walls of the person that she’s singing to. All she wanted to do was to get through to them… and the person that she’s singing to basically destroyed her instead.

So:

Heiji = Miley riding on a wrecking ball, destroying the metaphorical walls that Hakuba has built up to protect himself
Hakuba = getting scared of being so vulnerable and lashing out to protect himself with precision-strike hurtful comments because he’s really good at that

HEIJI NEVER MEANT TO START A WAR