呂蒙 子明/Ryomou Shimei (x.com/kokoro777pp)
關羽 雲長/Kan'U Unchou (x.com/iorimoe_five)
孫策伯符/Sonsaku Hakufu (x.com/enako_cos)
呂布 奉先/Ryofu Housen (x.com/manatsukin)
趙雲 子龍/Shiryuu Chou-un (x.com/tsunko_p)
孫権 仲謀/Sonken Chuubou (x.com/toomi_nico)

These are collected from magazines Young King Bull 2021-03, Young King Bull 2021-04, Young King Bull 2021-08, and Young King Ours 2021-09. There are extra photos from the cosplayers' tweets from 2021 when promoting their appearances in those magazines.

VIDEOS:
https://www.youtube.com/watch?v=uE1pgakiLns (Photoshoot of the girls!)
https://x.com/kokoro777pp/status/1358374383664779265 (Ryomou 7 second photoshoot)