NEI is probably the most-watched live by IM@S VAs. Anons who went to K-Arena might be unaware these seiyuu were also in their vicinity:
AkabaneP: https://x.com/kenji__akabane/status/1951993038898712900
Syoko: https://x.com/DApanda323/status/1951992854131384746
CG Haruna: https://x.com/37long/status/1951987588266361115
Karin: https://x.com/nitahiyo_yo_yo/status/1952005699661414425
Mirei: https://x.com/ayakasai0511/status/1951986168309981372
Yukimi: https://x.com/MINA_Ikmdct/status/1951625852497879055
Risa: https://x.com/HN_TMGI_/status/1952005655264628935
Kotoka: https://x.com/yukari_anzai/status/1952019634175307817
Mirai: https://x.com/yamazaki_haruka/status/1951984203735744955
ML Tsubasa & Yuriko: https://x.com/MachicoOfficial/status/1952009566230859930
Minako: https://x.com/zekieri818/status/1952016357358526518
Matsuri: https://x.com/Suwa_Ayaka/status/1951922992382185958
ML Nao: https://x.com/watanabeyui_Ton/status/1952015677902201149
Konomi: https://x.com/miiiiiina_cat/status/1951999391633658007
Momoko: https://x.com/keeeko_watanabe/status/1952012003326955731
Kaori: https://x.com/arisa_kori/status/1952022080368824818
GentaP: https://x.com/genta_5014/status/1951998137473884662
Hokuto: https://x.com/kanbara_daichi/status/1951990166567948682
Daigo: https://x.com/wokeke8/status/1952020866046496983
Hiori: https://x.com/reina_kondo/status/1952016752902365370
Sakuya: https://x.com/annakoto117/status/1952027055807398265
Asahi: https://x.com/yuki_t0626/status/1951640917401915454