Reincarnated into a Shingle Sea Urchin

Kip Ronnie thought himself to be one of the laziest people on Earth. He is lazy that he refused to get a job but instead laze around all day at home. He was lazy enough to use the bathroom in bottles, only performing actions when necessary. Being antisocial, he lived his life in solitude without much contact to the outside world for a long time, until he died from his heart being too lazy. But wait, why did he reincarnate into a sea urchin?