Bad_Road
The previous guy, on top of going back in time, had the system to buy advanced stuff. The advanced stuff already negate half of the appeal of backward time travel. Here, on top of that, you add an entire foreign lifetime that would dictate how the protagonist act. He was already supposed to learn from his past experience, but you made that previous experience irrelevant. At that point you should have just made the king transmigrate into a dead-by-overdose student in another world with a system. Also, I don’t get why you want to focus on his first important product being these f*cking pillows, when he should be able to make a software 5 years ahead of anything on the market. And again with the pill that force smut. I thought you wanted things to be more logical?