I am trying to remember an Anime I saw on you tube a few years ago. Its about a guy who gets caught up on the rich villain's tournament. The villain created the fighters and turned the city into one big combat zone.. The fighter choose their human counterpart by a kiss…. Or Vice versa. It’s a action, romantic , comedy with some drama. The man fighter is a boxer. Another main character is a female who owns a house who lets several of the fighters live in her house. Most of the fighters living in that house end up kissing the main character.