Tomoaki Hamatsu is a Japanese comedian known for trying to live for over a year on mail-in contest winnings on the show Susunu! Denpa Shonen.
Wikipedia says that he set a world record for living on contest winnings:
After spending 335 days to reach his target, he set the Guinness world record for the "longest time survived on competition winnings."
Many websites also say he did not receive any food for two weeks, until he won some. For example:
By the time the first episode airs, Nasubi has been holed up for 2 weeks with no food. Finally, there's a knock at the door—it's a guy delivering ramen. Thank God!
I am skeptical of this. Reality shows are frequently faked to some degree or another. And, although Susunu! Denpa Shonen was known for its cruelty, would it really deprive him of food for over two weeks? Further, he never seems to have received any wearable clothing, which seems like it might have been intended to preserve the gimmick of him being naked.
Did he really survive for over a year on contest winnings alone?