About: Renshu is a Yaksha spirit who's taken the duty upon himself to fight against the Shokushu, protecting the Haremverse. Despite not looking very intimidating, those who know him call him the "Great Dominator of Demons" and no one can subdue them better than him. However, these intense encounters take their toll, so he's somewhat reluctant to interact with humans. Due to those reservations, he seems cold and dismissive at first glance. Deep down, he's gentle, kind, and very curious to explore desires and love.
Renshu's appearance is likely referencing Xiao's prototype design, where he has red hair and mainly red and brown color scheme instead of green. Both of them are Yaksha, though Renshu is a spirit while Xiao is an illuminated beast, who deals with demons, and looks cold but is actually very caring.