A [[Virtual YouTuber]] agency founded by ZIZAI (then DUO Inc.), the company behind the [[Mirai Akari Project]]. It functioned akin to activ8's virtual talent support 'group', [[project upd8]], where ENTUM aided its endorsed VTubers with the creation of content, planned collaborations and events, served as spokespersons for the media and provided a physical address for fans to send correspondence.

ENTUM would shut down at the end of 2019, with its talents either also retiring, going independent, or finding new agencies.

h4. Talent that was at some point part of upd8 in rough chronological order 
[tn]Departures/retirements listed if they occurred under ENTUM. Groups and channels with multiple characters receive their own copytag.[/tn]

* [[Mirai Akari]] / [[Mirai Akari Project]]
* [[Nekomiya Hinata]] / [[Hinata Channel]]
* [[Yomemi]] / [[ICETEA]] (departed in June 2018 with [[Eilene]]'s departure from ENTUM)
* [[Todoki Uka]]
* [[Mochi Hiyoko]] / [[MochiPro]]
* [[Yumeno Tsukimi]] (retired in December 2018)
* [[Minamori Hero]] (retired with ENTUM)
* [[Tsukiyo Sora]] with Yozakura Kanon / [[Sora with Kanon]]
* [[Hanano Mitsu]] (retired with ENTUM)
* [[VT-212]] / [[Neets Channel]]
* [[Mikuriya Kuon]] / [[Mikuriya 9on]]
* [[Midy]]
entum