Eirin
Eirin Yagokoro (八意 永琳 Yagokoro Eirin) is one of the antagonists of Imperishable Night. She's a medical genius from the Moon, able to create even the Hourai Elixir with the help of Kaguya's power, the manipulation of eternity. She is living in exile in Gensokyo after choosing to stay with and devote herself to Kaguya Houraisan on Earth rather than take her back to the Moon. She was a very well-known figure on the Moon, having not only been instrumental in the founding of Lunar society with Lord Tsukuyomi, but also being its leading medical mind and the person in charge of the Moon's emissaries to the Earth.
Personality[]
Eirin is an enigmatic person surrounded by many mysteries and her answers regarding the mysteries about her are incoherent replies. She is generally a fairly pleasant person and is devoted to serving her ally, Kaguya, but she does not suffer fools gladly, and because of her incredibly high intelligence, she can come across as conceited, impatient and condescending at times to those not sharp enough to follow her explanations immediately. However, she also seems to lack general common sense, most likely due to her not living with humans.
Abilities[]
- Making any drug
She can make all sorts of drug/medicines, from medicine for the ordinary cold to drugs that can manipulate dreams. As one would expect, she is not able to make medicines that would require a physically impossible process in order to produce, nor can she make the medicine if she does not have the ingredients. Although she did make the Hourai Elixir, she made it using Kaguya's ability.
- Natural Genius
Eirin is said to be highly intelligent and considers other people to be less smart than her. Furthermore, the Yagokoro family is said to be a line of medicinal geniuses and even among them, Eirin is exceptionally intelligent. Due to this, Eirin is rarely understood by others.
- Immortality
It is not specified in her profile, but Eirin reveals to Yuyuko in the Netherworld Team's Good Ending of Imperishable Night that she has drunk the medicine made with Kaguya's ability, in order to not die. Yuyuko's response and further narration cement that this is referring to Eirin having become immortal, from the Hourai Elixir.
Occupation[]
After the events of Imperishable Night, Eirin has begun using her knowledge of medicine to act as Gensokyo's premier pharmacist, selling medicines at Eientei ranging from sleep aids to various cures. You can visit her like you visit a normal doctor, and she can even prescribe medicine for obscure illnesses. Her medicines are well known to work with no side effects, though youkai medicine and human medicine must never be mixed together. It's reasonable to believe her medicines come from the Moon or are developed with Lunar technology. The medicine is not only effective, but fairly priced. Fortunately, Eirin is not fussy about payment; she will most likely wait until you pay her. Still, it is believed that Eirin may have another reason for starting this business other than profit.
Yagokoro[]
Yagokoro is seen in Yukarin Fantasia
Is a fanmade character that appeared in various clips like Overdrive. It is a weird funny creature that kinda resembles Eirin.