Michael and I

"Hey Tubbo you might not believe this but I think the world is ending,"

Before he could even register what had happened it seemed as if Tommy's whole world turned upside down. Not long after the news report zombies started showing up everywhere and it became their new norm. It was the four of them against the world. Until it wasn't.

After the supposed deaths of Ranboo and Tubbo, Tommy is left to take care of Michael all on his own.

Or Tommy tries his best to take care of two kids by himself during a Zombie Apocalypse and is eventually taken in by SBI where he learns how to be a kid again.

(Also on AO3)