Nanashi Mumei (七詩ムメイ) was a female English-speaking Virtual YouTuber associated with hololive, debuting in 2021 as part of "hololive English -Council-" the branch's second generation alongside Tsukumo Sana, Ceres Fauna, Ouro Kronii and Hakos Baelz.
On 9 October 2023, she joined the unit "hololive English -Promise-" alongside IRyS, Ceres Fauna, Ouro Kronii, and Hakos Baelz.
Mumei graduated from hololive in April 2025. Her achivements in her time with hololive include reaching over 1 million YouTube subscribers and the release of a number of original music singles.

"Oh hi! Hoo’s this? Nanashi Mumei!"
The Guardian of Civilization, a traveling owl who has borne witness to numerous events.
Even though glimpses of past memories—seen and forgotten throughout her endless journey—occasionally surface, she is now a lovely girl who relishes each and every day. When once she was just an observer, she now enjoys her everyday interactions with civilizations and its people.
And soon the ordinary, ever-present daily life, shall also weave itself into the tapestry of civilization.