My Leader Detonated a Nuke from the Start, and the Relic Exploded in My Face

“Boss! The boss pressed the nuclear launch button!” “The boss is flying off with the nuke!” “The nuke exploded, and so did the boss!” The boss's relics splattered all over my face. I think I even swallowed one. [System notification: You little punk, here's your first mission. Go steal back the Nightslayer Wolf King's cub. Mission reward: 200 System points.] Liu Jin: “What the hell? What is this? A System?” [System notification: You look like you ate shit and couldn't digest it. I'm your boss.] In a high-martial world where the ancient myriad races are awakening and gods are descending, what do I do when my boss turns into a System?