Yousuke was a huge business man when he still hadn't invested in a scam share house. He was warned by tao, who is also a share house owner, but Yousuke ignored his warning and hence invested in it and ended up in a huge loss and even to a point where he had to ask tao for help and hence he started staying in tao's share house as his boyfriend
Sex is actually pretty amazing. See for urself
Super Darling is Dead