Even though Sasaki's droll corporate life is constantly filled with work, it leaves him tired and unfulfilled at the end of every day. In search of some companionship to fill the emptiness in his life, he visits a pet shop on a whim, not realizing he's about to change his life forever. After settling on an adorable bird and bringing it home...his new roommate reveals that it's actually an incredible sage from another world who promptly bestows Sasaki with supernatural powers as well as the ability to cross between worlds. All Sasaki wants to do is use these newfound powers to live in peace and comfort, but there are more than a few colorful characters who might get in the way of that...

Sasaki to Pii-chan began as a web novel on Kakuyomu on December 4, 2018. Kadokawa has released a revised and illustrated version of the series since January 25, 2021. The series has been published in English as Sasaki and Peeps by Yen Press under the Yen On imprint since August 16, 2022.