Is Sora and Shiro blood related?

Is Sora and Shiro blood related? Sora and Shiro are step-siblings, which means Sora’s father married Shiro’s mother. After the wedding, his family lived together, and that’s when he met Shiro.

Sora and Shiro are step-siblings, which means Sora’s father married Shiro’s mother. After the wedding, his family lived together, and that’s when he met Shiro.