>>49956666
>doesn't becoming a magician implies turning into a youkai since it's sort of an species?
Magician as a race isn't technically a youkai, they're just humans that are born being able to use magic unless they become ageless youkai. Humans without natural talent can learn magic and become ageless youkai too. They are both thereafter magicians in a youkai sense. I'm not sure why they're considered youkai just for being magically ageless other than they generally use evil magic. I feel like ZUN should reclassify them as a kind of hermit or half youkai or something. They're really only youkai in name only otherwise, and aren't naturally stronger than humans(Byakuren included), nor need to eat people or at all, don't need to be feared or anything. Not sure if they can heal themselves after being killed like other youkai either but there's probably some magic to heal and revive like a phylactery or something.
>I don't remenber how fortune teller turned into one
He didn't become a magician, he killed himself and tricked Kosuzu into making him an angry ghost via placing schizo ramblings alongside actual fortune telling advice and gaining a grudge when Kosuzu rightfully thought that part was bullshit. Then he solidified himself similar to a ghosthu instead of being a body-less spirit. He did something unspecified to Kosuzu that made her pass out as well. Probably possessed her and felt her up. Gotta wonder why he didn't foresee Reimu killing him but maybe that was part of his master plan, switching the grudge to her instead of Kosuzu's dismissing of his works.(which ended up being destroyed)
>What does this mean for Marisa who was undergoing youkaification just a few chapters ago?
"She" wasn't youkaifying, she was astral projecting. Her body might have turned into some other kind of youkai. It's vague but she wasn't necessarily becoming a magician youkai. Half-youkai were-creatures were said to be allowed to live in the village and there are plenty of youkai who hide there or are wanted, like Miyoi, I wonder what would happen if a human got turned to a vampire or something against their will.