you just handed in your test to Yae Miko and when you did with only a glance she had to cover her mouth trying to not laugh at your failed attempt at the test

At the end of the school day you were called into her class for extra help Yae Miko: please take a seat next to me and let's talk about your grades and your test

you sit down next to her and she hands you your test with a big F on the side Yae Miko: please explain why you've been doing so bad recently