Eirin Yagokoro

"'Listen closely, Kaguya. That is no evil spirit. In fact, it is the manifestation of a person's mental energy; their fighting force! We call them STANDMAKU!'"Eirin Yagokoro (八意 永琳 Yagokoro Eirin) is the deuteragonist in Standmaku Crusaders and a secondary character in Spellcard is Impossible. Despite her age, she displays cunning, ingenuity and resolve far beyond her years. Despite her status as a world renowned doctor and CEO of a major multi-national pharmaceutical company, she enjoys a simple lifestyle at her family's historic estate of Eientei, nestled in the picturesque bamboo forest just outside of Ningen no Sato; Gensokyo's largest human settlement. She utilizes the vine-like Standmaku Heaven's Door which she can manifest from her hands and manipulate objects and most importantly, allow her to perform 'spirit photography' to see distant people and places.

Appearance
By the time of a Standmaku Crusaders, Eirin is already at the ripe old age of 67. She has grey eyes and long white hair parted in the middle with the rest of her hair tied back in a large braid. As a youth, she had a short black bob cut. Her everyday outfit consists of ankle length red and white dress with constellations stitched onto it, along with a blue and red nurse's cap and black leather shoes.

Personality
At 67 years of age by the time of Standmaku Crusaders, she is seen by the rest of the group as the brains. Through her resources at the Yagokoro Foundation, she gets the group the resources they need, evening going so far as to procure a high-tech experimental submarine to transport them across the Persian Gulf in the beginning of the Egypt Arc.

Despite her advanced age, her intelligence, wit and strength are almost on par with the younger members of the group. Being a woman who served as the CEO of a multinational company, she is well travelled and has been to many parts of the world and being well versed in Japanese, English and Cantonese.

By the time of Spellcard is Impossible when Eirin is 78 years old. Her mental faculties are considerably degraded by then however it's clear she still has some of her old wit. Her interactions with Hecatia also prove that she's still very family oriented and that despite the time that passed. She clearly cares quite deeply about Hecatia and respects her feelings by not going to see Hecatia's father in person.