Reborn as a Paramecium: My Ex-Girlfriend Drank Me

[Micro counter-kill + system + extreme revenge + not the Holy Mother + great imagination] My girlfriend Su Na, who has been in love for five years, teamed up with Will-o-the-Wisp Huang Mao to push me off the cliff for the sake of a five million accident insurance. I died tragically at the bottom of the cliff, still full of resentment. When I opened my eyes again, I turned into a paramecium. "Beep! The infinite evolution system is activated!" I want to build a microscopic empire so that you can neither survive nor die!