I Finally Retired, Only to Be Forced to Start Over

An agent transmigrates and is reborn. Is it coincidence, or was it planned? Possessed by someone else? A professional killer before death, and a professional... rescuer afterward? My deskmate is no simple kid, and my big brother has his own secrets. Why won’t the big bad behind all this just croak already?! Ugh, I’m exhausted. Transmigration is exhausting!!! Wait, what? I have a younger sister too? Huh? You’re saying that after all my hard work, nobody makes it out alive in the end? Fine! Great! Just great! Oh, right, this story also has a little cultivation in it. Just a tiny bit, for the sake of the plot |･ω･`) Too few words? Not enough content? Less is good: you can finish it in one sitting without worrying you’ll forget the plot. Leave a rating when you’re done.