I Chose the Wrong Master but Married the Right Person

An elite special forces soldier was betrayed by his comrades during a mission. He thought he was doomed, but unexpectedly transmigrated to three years earlier. Since fate had given him a chance to live again, he was determined to seize it and uncover the truth behind everything. But hopes are always high, while reality is harsh. Though born into a wealthy family, in this life he was nothing but a good-for-nothing. Calling him a spoiled rich second-generation heir was already a compliment. Being gay would have been one thing, but he was also a bottom. His family arranged a marriage with another wealthy family, and he ended up as a live-in son-in-law everyone looked down on. The strange techniques taught by his fraud of a master, and those skills too lowbrow for polite company, were suddenly a great help. Though he couldn't hurt a chicken, he used the knowledge and foresight from his previous life to carve out a place of his own, expose the mastermind, and make up for the regrets of his past life. That was only the first step. He had even greater goals and ambitions ahead.