A manga adaptation illustrated by Pureji Osho began serialization in Kadokawa Shoten's Shōnen Ace Plus online magazine in January 2021, and has been compiled in three tankōbon volumes as of August 2023.

After seeing a coworker's cat pics, he is inspired to adopt a pet, hoping to give his empty days some spark of joy.

Feeling a connection, he takes his new friend home only to discover the tiny bird to be Piercarlo, the reincarnated Star Sage from a parallel world.

An anime television series adaptation was announced during the "Natsu no Gakuensai 2022" event for MF Bunko J on July 24, 2022.

[3] It will be produced by Silver Link and directed by Mirai Minato, with scripts written by Deko Akao, and character designs handled by Saori Nakashiki.