16-18: WHY AM I THINKING ABOUT BERNKASTEL, DAMMIT?!

Considering she's around 100 during the games, she's still around toddler in these years. But, I don't know how yokai aging works.

I don't think Patchy's a youkai...

She is.

Youkai Magician, most likely.

A magician. Not exactly a youkai, but not that much different. Her life span is still comparable.

Patchouli is a born magician, unlike Marisa (human witch) or Alice and Byakuren (human-turned-youkai). She's a true youkai girl.