C437 Sakura's Life Is Hanging by a Thread

I'm really confused too.

What kind of grudge could there be between siblings? If this Sendo Akira really blamed all of the hatred and resentment from Mizuki Masako's death on his parents, Sakurako would be innocent. She should not have endured Sendo Akira's hatred! Furthermore, I have a feeling that... Mizuki Masako's death must have something else to do with it