ONE is a show which features several sentient objects involuntarily competing in a competetion from another universe.
The prize? Anything they want. At the end of each episode, viewers can choose who gets eliminated. The person who DOES get eliminated gets to go back to the real world.
Because it is simply better than any show like it. It is also more story based. The show is on its' 12th episode now, but I highly recommend you watch the show from its' first.