"Just a little longer. A little longer and the  Saigyou Ayakashi [en.touhouwiki.net]  will be in full bloom..."
— Yuyuko Saigyouji

Yuyuko Saigyouji   (西行寺　幽々子 Saigyouji Yuyuko)  is the main antagonist of   Perfect Cherry Blossom [en.touhouwiki.net]. She's the   ghost [en.touhouwiki.net] "princess", head of  Hakugyokurou [en.touhouwiki.net] in the  Netherworld [en.touhouwiki.net].

She first appeared as the Final Boss of  Perfect Cherry Blossom [en.touhouwiki.net] , later becoming a playable character along with   Youmu Konpaku [en.touhouwiki.net]  (as a duo) in  Imperishable Night [en.touhouwiki.net]  and showing up as an expansion character in  Immaterial and Missing Power [en.touhouwiki.net] ,  Scarlet Weather Rhapsody [en.touhouwiki.net] , and  Touhou Hisoutensoku [en.touhouwiki.net] . She would eventually also appear as the Stage 1 boss in  Ten Desire s [en.touhouwiki.net] , and as a Day 4 boss in  Impossible Spell Card [en.touhouwiki.net] .

Unlike many departed spirits, Yuyuko resembles a living  human [en.touhouwiki.net]; a  humanoid [en.touhouwiki.net]. Personality
She is very cheerful and friendly . In fact, her playful, good-humored personality, otherworldly beauty, and courtesan charm can have a disarming effect . She often makes bizarre and apparently nonsensical remarks and sometimes seems to overlook the obvious , leading to her characterization as an airhead or a ditz . For instance, in  Touhou Bougetsushou [en.touhouwiki.net] , she toyed with  Youmu Konpaku [en.touhouwiki.net]  as a daily occurrence even with   Ran Yakumo [en.touhouwiki.net]  present.

However, at other times she will reveal an extremely cunning and perceptive side and will also sometimes display an extraordinary level of knowledge . For instance, in  Scarlet Weather Rhapsody [en.touhouwiki.net] , she was the quickest character to identify the culprit as  Tenshi Hinanawi [en.touhouwiki.net]   when the incident was in the omen stage , (   Yukari Yakumo [en.touhouwiki.net]  spoke of the dwindling of phantoms as   Komachi Onozuka [en.touhouwiki.net] 's negligence, but Yuyuko guessed correctly). Additionally, in  Ten Desires [en.touhouwiki.net] , she obliquely informed the playable character about the location of the incident regarding the   divine spirits [en.touhouwiki.net] . She is also known for her incredible appetite . Design In  Perfect Cherry Blossom [en.touhouwiki.net]  she has maroon eyes , short wavy pink hair , and is surrounded by several small formless  Phantoms [en.touhouwiki.net] . In all of the games, she wears a light blue and white kimono with dark blue trim and white designs ; a blue mob cap on the front of which is a  hitaikakushi [en.wikipedia.org] with a red ghost insignia ; and a veil of the same color of the kimono behind her head . She wears dark shoes with blue ribbons attached . In  Scarlet Weather Rhapsody [en.touhouwiki.net] , her hair's slightly longer than normal , and her veil's more white than blue .
In  Ten Desires [en.touhouwiki.net] , her hair's a paler shade of pink , her kimono's still a light pale blue , and the ribbon around her waist , the ribbon going down her kimono , and the bands and lacing on her arms and collar are black instead of white and blue . She now wears a transparent layer underneath , her mob cap lacks the veil it had in Perfect Cherry Blossom ,   Immaterial and Missing Power [en.touhouwiki.net] , and  Scarlet Weather Rhapsody [en.touhouwiki.net] ; and her hitaikakushi's insignia has changed shape . Her black shoes also lack the blue ribbons .

Throughout the games, the designs on her kimono change. In  Perfect Cherry Blossom , it has floral designs ; in  Immaterial and Missing Power , the designs are of butterflies and flowers ; in   Imperishable Night [en.touhouwiki.net] , the b utterflies and flowers design is replaced with a clouds and moon design ; and in  Ten Desires , the designs are of ghosts.

The phantoms surrounding her sometimes carry an object. In  Perfect Cherry Blossom , one of the phantoms carries a cherry blossom twig ; in  Imperishable Night , one carries a small blue lantern ; and in  Scarlet Weather Rhapsody  onwards, they no longer carry anything.

In   ZUN's E-mails [en.touhouwiki.net] , ZUN [en.touhouwiki.net] described her as having a slightly tall height.

I don't wanna losе this feeling
No, I don't wanna lose this feeling
Oh, no, I don't wanna lose this feeling
I don't wanna lose it
I don't wanna lose it
I don't wanna lose it