You Can't Play Tag by Yourself, and It's Fun to Play With Others

How to Keep a Mummy · Episode 4 · “You Can't Play Tag by Yourself, and It's Fun to Play With Others”

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:...