Stolen by My Best Friend: Step-Sister NTR

Synopsis

Mizuki and I aren’t real siblings. We met as step-siblings when our parents remarried during our school years. After our parents died in an accident years later, we supported each other living together. As time passed living alone together, I developed romantic feelings for Mizuki. My dreams of a future with just the two of us were shattered by my best friend Kyohei. Jealous of our closeness, Kyohei makes his move on Mizuki whenever I’m away…