How to keep a mummy

How to keep a mummy (ミイラの飼い方, Miira no Kaikata) is a manga series by Kakeru Utsugi. Crunchyroll has licensed it for online English distribution.

An anime adaptation by Studio 8-Bit is due in Winter 2018.

Plot
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!

Official
Official English manga site