NIJISANJI

Nijisanji (にじさんじ) is a group of mostly 2D-only Virtual YouTubers and also known as "Virtual Livers" (バーチャルライバー Baacharu Raibaa) when posting in other sites outside YouTube such as to NicoNico Douga (a self-made Wasei-eigo word pronounced similar to "alive", not as the "liver" organ) who stream via iPhoneX devices with face capture and Nijisanji's app. This is technically simpler and much less expensive than a full-body 3D-capture equipment, but the resulting motion is mostly limited to facial features, and the technology has been noted to suffer some stuttering and accuracy issues. The group started in Japan in early 2018 and is managed by Ichikara Inc.

There are a large number of Nijisanji members in the Top 100 Virtual YouTubers, with Tsukino Mito having the highest number of subscribers, and the other girls in the JK Gumi being close by.

On 17 July 2018 they announced Chinese and Taiwanese Vtubers as an expansion into those markets.

Members
The current members endorsed by Nijisanji include:

First Wave

 * Tsukino Mito
 * Yuuki Chihiro
 * Elu
 * Higuchi Kaede
 * Shizuka Rin
 * Shibuya Hajime
 * Suzuya Aki
 * Moira

Second Wave

 * Mononobe Alice
 * Fushimi Gaku
 * Ienaga Mugi
 * Morinaka Kazaki
 * Suzuka Utako
 * Toya Rei
 * Ushimi Ichigo
 * Yuuhi Riri
 * Kenmochi Toya
 * Gilzaren III
 * Fumino Tamaki

Gamers

 * Kanae
 * Akabane Youko
 * Sasaki Saku
 * Yamiyono Moruru
 * Honma Himawari
 * Makaino Ririmu
 * Kuzuha
 * Setsuna
 * Siina Yuika

SEEDs
Main Twitter account here.

The groups are later dissolved, merging them into a single Nijisanji group. 
 * Dola
 * Hanabatake Chaika
 * Hassaku Yuzu
 * Izumo Kasumi
 * Aduchi Momo
 * Nakao Azuma
 * Ryushen
 * Sister Cleaire
 * Suzuki Masaru
 * Todoroki Kyoko
 * Umiyashanokami
 * Uduki Kou
 * Yashiro Kizuku
 * Harusaki Air
 * Kanda Shoichi
 * Amemori Sayo
 * Naruto Kogane
 * Takamiya Rion
 * Asuka Hina
 * Maimoto Keisuke
 * Debidebi Debiru
 * Rindou Mikoto
 * Rikiichi Joe
 * Machita Chima
 * Tsukimi Shizuku
 * Sakura Ritsuki
 * Achikita Chinami
 * Naruse Naru
 * Belmond Banderas
 * Yaguruma Rine
 * Yumeoi Kakeru
 * Kuroi Shiba

VOIZ
Originally a four Virtual Liver ensemble. Only two members of the VOIZ group are continuing with their activities:
 * Naruse Naru
 * Harusaki Air

2019 Wave
As of April 2019
 * Warabeda Meiji
 * Kudou Chitose
 * Gundo Mirei
 * Yuzuki Roa
 * Onomachi Haruka
 * Kataribe Tsumugu
 * Seto Miyako
 * Otogibara Era
 * Inui Toko
 * Ange Katrina
 * Lize Helesta
 * Saegusa Akina
 * Aizono Manami
 * Lulu Suzuhara
 * Mahiro Yukishiro

Trivia

 * Nijisanji can be represented as the number 2434, so this is sometimes seen in their material. Also during live-streams, fans sometimes donate 2434 yen (~$21 USD).
 * The company is run by a man named Iwanaga, whose Twitter is here. He sometimes does live-streams as a female-looking VTuber named Iwanaga-chan.
 * On March 2019, Nijisanji was forced to abort the debut of a Virtual Liver called Raito Shindo (真堂雷斗) . Apparently, the VA of Raito violated several terms of his contract related to the privacy of his fellow colleagues and other VTubers. The scandal was widely cover by image boards and forums such as 2chan, 5ch and 4chan.