I Returned, Then Slaughtered My Way Through Cyberpunk to Become an Evil God

[Decisive and ruthless / Revenge / Unconventional heartthrob / Canine-style magic gremlin / Supernatural urban fantasy]

A star employee of the quick transmigration bureau comes home for a family visit. Here's her vlog:

Day 1: Learns her mother is dead. Very sad.

Day 2: Digs up the grave, pretends to work for a nonprofit, and runs into a sculpture-like handsome guy in the park.

Day 3: Uses the stepfather who murdered her mother as a tennis racket, inherits the handsome guy's estate, and gets pampered by a beautiful older sister.

Day 4: Attacks and impersonates an investigator from the bureau, breaks into a private home, and disposes of a body.

Day 5: Meets two idiots from a rich family and knocks out the elder son.

Day 6: Picks up the casino owner's adopted son, an unconventional type, and worships a god alongside hive-mind cultists.

Day 7: Breaks into the mainframe maintenance zone and, because she dislikes the mainframe's information logs, force-formats the C drive.

Day 13: Rescues a naturally airheaded gamer and learns that mysterious forces are reviving across the world in ways that are hard to stop.

1. The setting is a cyberpunk city with supernatural abilities and games; players will appear later. The heroine is a local who went away to work and came home to find her family gone.

2. The heroine sometimes acts in very unusual ways, and the System is her one true love.

3. Although she keeps picking up companions to work with, she usually tosses them aside without a second thought, so she might as well be a lone wolf.

4. The heroine is a little elusive, mercurial, and fond of killing people like tossing ingredients into a boiling hotpot.