Shiisan's ritual

It's illustration from the book "Spirit-masters" by Aleksey Pekhov with co-authors. It's Sagyunaro, the one from three main characters. He's half-human, half-dark spirit named Shiisan.

And here he's at the moment of dark ritual that must turned him to Shiisan

Иллюстрация к эпизоду из "Заклинателей" Алексея Пехова, Елены Бычковой и Натальи Турчаниновой. Сагюнаро в подземельях шиисанов.