Nasu Kayo

Name: Hanayo Nasu (in AI and AINI Present) | Hanayo Yogano (AINI Past)
Sex: Female
Age: 36 (in AI (falsely listed as 24) and AINI Past) | 42 (in AINI Present)
Birthday: April 27
Profession: Nurse
Likes: Candles, Ropes, Rodeos (AI) | Tengu, Matsutake, Zucchini (AINI Past) | Manual Transmissions (AINI Present)
Dislikes: Jocks, Queen Bees (AI) | Dirty Talk, Perverts, Shameless People (AINI Past) | Speed Traps, Traffic Cams (AINI Present)
Hobbies: Theater (AI, AINI Past) | Driving (AINI Present)
Skills: Can shave really fast (AI, AINI Past) | Drifting, Double-Clutching (AINI Present)

In AI: The Somnium Files:
She is a member of a small group of actor/nurses. She practices hard, even though she has yet to land a leading role.

In AI: The Somnium Files - nirvanA Initiative:

It may have said her was 24 somewhere before, but that was in base 16. In base 10, her actual age is 36. That's her actual age. She's in a theater group.

Her actual age is 42. She took care of Jin Furue when he was in his late teens. Recently, she got into cars and goes on expressway races when she's off the clock. She's still in the theater group.

Spoiler

In the first game, Hanayo attends to Saito Sejima as his nurse after he gets in a car accident inside Renju Okiura's body. In the second game, she attends to Bibi in the Past and to Ryuki in the Present.
In the first game, she is engaged with Dokuta Yogano, a mob doctor working for the Kumakuras. In the second game, she is seemingly already married to Dokuta in the Past, but in the Present the two are divorced