Leveling Up, by Only Eating!

The main character is stricken by a rare condition that affects only two people in the entire world, bulimia. He organizes his daily meals to survive, but his hope of survival grows dimmer as the days go by. He consults a doctor, who suggests playing the Alternate Reality Game 'Athenae', where he can eat as must as he wants without gaining any weight. This is the story of him playing the game to eat all the food he can't enjoy in his normal body! A Gourmet Fantasy Life!