I can't grow all at once, so I'll grow over time

How to Keep a Mummy · Episode 6 · “I can't grow all at once, so I'll grow over time”

When high school student Sora Kashiwagi finds himself staring down a mysterious oversized package sent to him by his self-proclaimed "adventurer" father, the last thing he expects is for it to be opened from the inside... by a little mummy so small it can fit in the palm of his hand! (Source:...