[Quick transmigration + invincible heroine + face-slapping + comedy + no romance]
Su Tang, an ancient nine-tailed celestial fox, has lived for countless years. She's been an empress, slept in a dragon's bed, and even wears three fragments of the Heavenly Dao on her tail as decorations.
She was sunbathing in the Maldives when she got bound to something called the "Supporting Female Character Comeback System."
System: [Please complete the body-double mission, Host, and win over the yandere Demon Venerable!]
Su Tang: "A body double? The Demon Venerable you want me to win over was still wearing split-crotch pants back when I was one."
System: [Please follow the plot, get face-slapped by the heroine, then make a comeback!]
Su Tang: "Face-slapped? I usually just hit people."
System: [Please don't break the world's rules!]
Su Tang: "Even the Heavenly Dao would have to call me Ancestor. Who do you think you are?"
She can't be bothered to destroy the System, so she just uses it as free transportation between small worlds: palace intrigue, household battles, cultivation, the apocalypse, interstellar adventures, Western fantasy, beastmen, esports, the entertainment industry... In every world, she does whatever she wants, shows off and face-slaps, takes disciples and collects rent, and lets everyone treat her like an ancestor.
Everyone thinks she's a noob, but she's actually beyond the whole server.
The System goes from acting high and mighty to being forced to fawn over her, crying and wishing it could go home.
(No romance, the heroine shines on her own, crushing everyone from start to finish, pure satisfaction all the way.)
It's very well written. Please support me. Come on.