My Best Friend and I Take Turns Giving the Male Lead a Pass

Ding! Complete the mission to win over the male lead, and you can go home. Let my best friend handle this mission instead. After all, we transmigrated into a book together. I'll give her the chance to go back to the modern world and be a wage slave. After she leaves, I'll claim the System's compensation, gain the strongest all-spirit-root constitution in history, and rule supreme throughout eternity in this cultivation world! But it seems my best friend has the same idea… [Cultivation stages: Qi Refining, Foundation Establishment, Golden Core, Nascent Soul, Deification, Void Refinement, Body Integration, Tribulation Transcendence, and Great Ascension.]