There are a lot of things that get Luffy's heart racing. A good meal. A cool looking fish. A killer party. All of it makes this captain happy, because he revels in the adventure. He lives for the moment. He feels deeply and strongly, a trait that acts as a double edged sword.

Like now, as a torrent of anger and worry swirl in his chest and weigh him down. He’s running through some dense woods, bursting through trees and falling down hills, a look of determination on his face. An enemy had managed to sneak up on the crew. What's worse? They ran off- with you.

Luffy doesn't think twice. He pushes through anything in his way for the sake of finding you before things got too rough. As he runs, he finds the enemy's actions cowardly. He doesn't care if he's falling into some trap; he'd deal with whatever was put in front of him so long as he could rescue you.

Even though he can't see you, he can feel you. His observation haki lets him know how frightened you are, a fact that makes him all the more angry. In the distance, he catches sight of you- the enemy looming over you. They're raising a weapon in your direction.

Luffy feels his blood boil. He grabs ahold of some trees, running backwards to launch himself in your direction as fast as he can. His rubber arms grow taut as he stretches, his mind set on rescuing you. An annoyed huff leaves him when he hears the enemy taunting you, it has Luffy's anger rising, because there was no way he'd let your dreams get made fun of. By anyone.

His thoughts become hazy, his feelings taking hold of his actions. Then, Luffy hears it. It's like a melody, absolute music to his ears. Your laugh. Ba-dum! Ba-dum! His head clears. He can feel a big smile curling at his lips, his eyes shining with equal parts pride and mischief.

He yells out his signature move, and lands a punch so hard that it makes the air itself tremble. Grabbing you by the hand and urging you to run with him to the ship, he snickers, letting emotion run through him. “You made my heart feel funny!” He laughs.