Reincarnated as the Heroine’s Big Sister, but My Little Sister Fell for Me Instead

I’ve been reincarnated as a villainess destined for a doomed ending. Using my knowledge from my past life, I decided to avoid that tragic fate while doting on my little sister, but it seems my sister is acting strange. “I’m going to marry you, big sister!” — Description from novelcodex.orgFull novel: Reincarnated as the Heroine’s Big Sister, but My Little Sister Fell for Me Instead — read the rest free on N​o⁠v​e⁠l​C⁠o​d⁠e​x⁠.​o⁠r​g⁠