I Will Become the Villain’s Poison Taster

I was transmigrated into the body of a villainess in a tragic novel, destined to be poisoned to death before her execution. But, for some reason, my body became immune to poison. What's even more surprising is that I can distinguish the taste of poison! "I can distinguish the taste of poison." "Poison?" "Yes." "What good is that?" Oh, dear. This villainess's past is too much to handle to survive with mere tricks. So, I brought out my hidden card. "Your boss will be poisoned." That is, preventing the demise of the mastermind I know! "I can be your poison connoisseur." And so, I thought I would survive well as a clerk in the mastermind's shop... But our boss, who I thought was jus...