That's the sequel to "The Final Breeze". Harry and Severus aren't coping well with their life after Voldemorts defeat. Then a potion accident turns their life upwards down because Harry is turned twelve and Severus thirteen.

Takes Place: 4th summer - Snape flavour: None
Tags: Adoption, Alternate Universe, Child fic, Deaging
Categories: Big Brother Snape

There came a time in every Hogwarts student’s experience when they were required to serve the community in some capacity. After the war, Harry's time has come, and he has to do the service with Snape breathing down his neck.

Takes Place: 8 - Post Hogwarts (young adult Harry) - Snape flavour: None
Tags: Alternate Universe
Categories: Snape Equal Status to Harry > Comrades Snape and Harry, Teacher Snape > Professor Snape

When Harry is inexplicably deaged while working a case undercover, his children are suddenly left without a place to live, as Ginny died a few years ago in a tragic Quidditch accident. After an array of problems with other family options, the kids end up living with their paternal grandfather, Severus Snape, whom they've never met. Severus must learn to live with James, Al, and Lily, as well as explain to them why he and Harry remained estranged, even after learning that they were blood relations.

Takes Place: 9 - Post Epilogue (middle aged Harry) - Snape flavour: None
Tags: Deaging
Categories: Parental Snape > Guardian Snape, Parental Snape > Biological Father Snape