When you gave it to Tojiko, this happened...
I'm sure you asked for her consent first, hmm?I was trying for a stamina recovery potion that would work on spirits, but...Oh, I knew that wasn't gonna happen, so I slipped it into her drink...That right there, Teacher.Can you really blame me?And?How are you going to fix this?
Don't even try to tell me it's permanent.Oh, don't worry.
The effect should only last for a while.She should be back to normal by tomorrow, maybe the day after...That's why I can't bring myself to respect you.Soga-sama and perhaps Okiku-san were the only spirits on hand.Okiku-san: The plate-counting ghost, Futo's urban legend.