Three Days of Happiness(2013)

Mikkakan no Koufuku

HOW MUCH IS LIFE TRULY WORTH?
Kusunoki used to believe he was destined for great things. Ostracized as a child, he held on to a belief that a good life was waiting for him in the years ahead. Now approaching the age of twenty, he's a completely mediocre college student with no motivation, no dreams, and no money. After learning he can sell his remaining years-and just how little they're worth-he chooses to divest himself of all but his last three months. Has Kusunoki truly destroyed his last chance to find happiness...or has he somehow found it?

(Source: Yen Press)