The Male Protagonist's Sister in Period Novel Is Dodder Flower

Cuscuta, a parasitic plant, looks weak but is actually a killer among plants. It is known as the living king of hell among plants. And one day, the little flower demon whose body is a dodder flower transformed into the cannon fodder sister of the male protagonist in the period novel who is as weak as a dodder flower, lacks the ability to make a living, and needs to rely on men to survive... [Introduction to be added in detail~] Intention: happy and joyful