The Naughty Child

Can anyone tell Greg why after he woke up, his thirty-year-old alpha husband suddenly turned into an eight-year-old child?!

In an omegaverse world where Sherlock Holmes’s brother, Mycroft, is an alpha and married to an omega named Gregory, Sherlock tricks his brother into drinking a potion that causes him to revert to his 8-year-old self with no memories. After years of marriage, the still childless Greg dotes on his now 8-year-old husband as if he were his own child.