I'm the Ultimate Panacea, but She Tossed Me Aside

Summary

I'm a medical miracle by nature. My blood is a natural antidote that can cure various poisons.

When Miriam Wiley, the unmaterialistic heiress of the upper crust, gets bitten by a venomous snake, her life goes into countdown.

At the critical juncture in my previous life, I slit my wrist and bled in order to help her cure the poison.

After saving Miriam's life, I found out that whoever saved her would become the future son-in-law of the Wiley family.

But the first thing Miriam did after inheriting her family fortune was to drain me of my blood.