The "Eternal Lunar Princess". Final boss of Touhou's Imperishable Night, imbued with the power of immortality.
The former princess of the Lunarians, banished to Earth for drinking the Hourai Elixir, which gave her immortality. She has since settled in Eientei, a mansion deep within a bamboo forest in Gensokyo, where she came to love the humans she once detested and her new, easygoing life. Because of this, she is comically depicted in fanon as a NEET who is always dependent on her bodyguard and creator of the Hourai Elixir, Yagokoro Eirin. She is also the master of lunar rabbit Reisen Udongein Inaba.
She shares a bitter rivalry with Fujiwara no Mokou, daughter of one of her many spurned suitors. Both have since been killing each other for centuries, despite knowing that neither can permanently die.
