An astrologist of great skill and equally-great pride, Mona has taken up residence in Mondstadt to avoid incurring the wrath of her master after unwittingly reading the latter's diary.
Hu Tao is the 77th Director of the Wangsheng Funeral Parlor, a person vital to managing Liyue's funerary affairs. She does her utmost to flawlessly carry out a person's last rites and preserve the world's balance of yin and yang. Aside from this, she is also a talented poet whose many "masterpieces" have passed around Liyue's populace by word of mouth.
She is the daughter of Naganohara Ryuunosuke and the current owner of Naganohara Fireworks. With her colourful fireworks and outgoing personality, Yoimiya is beloved by everyone on Narukami Island, who state that summer is not the same without her.