ONE PUNCH MAN X AFTER DARK [EDIT/AMV]

"Rumble in One Punch Man" could refer to a variety of scenes, but if you're referring to an intense battle or showdown, here's a description:

"In a thunderous clash of power, two titans collide in a spectacle of sheer force and skill. The air crackles with anticipation as muscles tense and fists fly, echoing the relentless determination of combatants locked in an epic struggle. Each blow reverberates through the arena, shaking the very ground beneath their feet, as the clash of might reaches its crescendo, leaving spectators breathless and in awe of the raw power on display."