After Binding to the System, the Cannon-Fodder Senior Sister Wins by Doing Nothing!

Transmigrate + transmigrate into a book + System + lighthearted comedy + satisfying power fantasy + comeback + slacking off

The moment I opened my eyes, I'd become the third senior sister, a stepping stone in a novel about a woman adored by all?

Ding! The Host has rejected the role of a mere tool. [Slacker System] activated! Starter pack: [Max-Level Comprehension], [Immortal Divine Art]!

Should I keep being a stepping stone, going all out for my junior sister, only to have my spiritual root ripped out and die a miserable death? Or should I make a run for it tonight? Whoever wants to be the tool can take the job. I'll tear this lousy script to pieces!

Who could've guessed that after slacking off, running away, and joining another sect, all those bootlicker senior brothers who used to orbit the original heroine would end up surrounding me and yowling for my attention? The world-weary eldest senior brother who would have died for the heroine now chases me around, roaring at me to get my act together every day?!

Damn it, what is the Demon Lord doing here now?!