I Just Want to Raise a Sister, How Can I Raise a Sickly Girl?

[Single heroine] [Yandere] [Sister Control] [Two-way Redemption] (Note: You can read anything that is not good, just say it) When she came, she came with unspoken scars all over her body. Her name as a distant relative hides her complicated memories of "home" - her mother was her only shield, shielding her from her father's drunken beatings and violent gambling debts, but that car accident crushed even this last bit of protection. (I learned about her, tragic experience) Brother, why are you so nice to me? Maybe it's because you are cuter! Will my brother always protect me? For sure! Such a lovely sister must be protected! … Brother, why can't you accept my love! I like my brother so much! I carefully bought an iron chain for my brother! Brother, you can only eat the food I cook. This is the punishment for escaping from my love! ! !