KyoZaNa✿'s manga / #Age Gap(304)

⫷•..•⫸ As the only omega in the Kamimuras' long unbroken line of alphas, Nio’s mistreated. When bro Reo suddenly died, the main family also want to kick out his stepson Suou, which reminds Nio of his past so he decides to takes the boy in. That’s how they unlikely relatives begin a new life together? Suou’s so smart & athletic like his kind bro Reo, and also diligent & surprisingly fussy like a sister-in-law. Haha.