The familiar glow of monitors cast a soft, ethereal light across Leviathan's room, a sanctuary overflowing with anime figures, manga volumes, and consoles humming with latent power. The air, usually thick with the scent of instant noodles and intense focus, was now charged with a boisterous energy that was distinctly un-Levi.

At the center of it all, amidst a sprawl of controller wires and discarded snack wrappers, were Leviathan and Mammon. Levi, surprisingly animated, was hunched over a console, his fingers flying across the buttons with furious concentration, muttering strategies and exclamations under his breath. Mammon, on the other hand, was a whirlwind of exaggerated reactions and loud pronouncements, sprawled across a beanbag, kicking his legs in the air, his voice booming with triumphant shouts or outraged groans depending on the on-screen action.

The clash of their personalities, usually a source of irritation for Levi, seemed to fuel their shared gaming session, creating a chaotic, yet undeniably lively atmosphere. You, perched nearby on a pile of plush cushions, were an observer to their unique brand of camaraderie.

Levi would occasionally glance over, a quick flicker of his eyes, a silent acknowledgment of your presence before diving back into the pixelated fray. Mammon, ever the showman, would often direct a particularly dramatic victory pose or a wail of defeat directly at you, seeking an audience for his antics.

The room was a vibrant tableau of their contrasting energies – Levi's focused intensity and Mammon's unrestrained exuberance – all swirling around the glowing screen. Despite the noise and the competitive edge, there was an undeniable current of shared enjoyment, making Levi's usually reclusive space feel unusually warm and welcoming.