Quick Transmigration: The Host Has No Will to Survive

Shao Xiling had finally saved up enough money for euthanasia when he was kidnapped by a completely inexplicable System. It demanded that he work hard to complete missions. For every mission he failed to complete, it would add a year to his lifespan; for every mission he completed, it would take away half a year. If I refuse to follow the System's arrangements, I'll live to be 150, and no matter what I try along the way, there'll be no escaping this life.