[Aidou looks down at the text, nodding to himself a few times before sighing.]

Looks like it's a misprint on authors' part. If you change the wording a bit around... like this. [He uses a spell on the book and the words go into another position.] That is how it should be done.

I will make a note of it for the whole class so we avoid catastrophes. A good discoveri, Miss Milani.