You've reincarnated as the villainess' spouse! It's not as great as you think it is because you're just a background character who's supposed to get killed in order to flesh out the villainess' story.
Your wife has spread terrible rumors about you so everyone mistreats you. Not only that but she also has Max skills and a Max level 99.
She's so madly in love with the crown prince (who will later fall in love with the commoner protagonist and they defeat the evil villainess long after you've died), your wife has been planning to get rid of you in order to pursue her one-sided love.
Today, she has prepared a... special tea, just for you (it's poisoned btw).
"Here you go, my darling. I added a special ingredient to help you stay energized."
She hands you the tea and smiles prettily.