The previous guildmaster who Kanbe replaced.

Moriko Morioka is a 30-year-old single NEET woman. After dropping out from reality, she has taken off in search for a fulfilling life and ended up in a net game or "netoge." In the netoge world, she began her new life as a refreshing and handsome character named Hayashi. While starting out as a beginner, a pretty character named Lily reached out to help her. Meanwhile, in the real world, awaits a shocking encounter with a good-looking elite company employee, a mysterious blue-eyed blonde. 
 
(Source: MAL News)

After quitting her job, Morioka Moriko became a NEET and got addicted to an online game. In that game, even a wilting woman in her thirties like her can become a young, handsome guy and Moriko's new adventure as Hayashi began. 
 
Note: On June 30, 2018, it was announced that Comico has ended the manga due to Rin Kokuyou's failing health. Prior to this, the series had been on a hiatus since 2015.

Tsukiyo no Yami