His wife was cheating. In our bedroom. Right now... Holding a camera in his hand, he goes to take a picture of her partner... another me?! Koki Machino's life is monotonous, confined to the mundane routines of suburban existence: a home, a child, a stable job. But as his professional prowess wanes and his wife's has turned cold, only talking to him through their child. Koki finds himself teetering on the brink of discontent. Then, in a twist of fate, he stumbles into a parallel universe, where his doppelgänger basks in a world of boundless joy and adoration. Envious of this alternate self's blissful existence, Koki grapples with jealousy and guilt, wanting more than anything to take his place…