Yes, her mom (alt)

As sako was crossing through a corner she looked back to see if she was being watched but since she was not looking at the front she bumped into someone, she fell back on her ass and slowly looked up, in front of her was standing the worst person to find her in her current state, her mom.

Sako's mom had her hands in her hips looking down at sako with a dissapointed glare

"Mom..." said sako.

"What are you doing? What is this?! " asked sako's mom pointing at sako's exposed underwear.

"I-it's not what you think" said sako.

"Then what is it?! I come here to see if you're studying well and I come to find you running around exposing your underwear to everyone?!"

"Mom, please, I can explain, it's not my fault" said sako with tears in her eyes.

"I don't care, you're coming home right now" said sako's mom grabbing her daughter's arm.

Many students from other classrooms were peeking out to see the spectacle, they were surprised to see Sako's mom, she was known as a very strict woman and it was rumored that she had once fired a teacher for not following her rules.

"Mom, please, I'm sorry, let me explain" pleaded sako.

"shut up!"

"mom, look, I can explain-"

"what are you going to explain?! That you like everyone to see your underwear?! Or that you're a pervert?!"

"mom, it's not like that, please"

"now that I think of it, where did you get that slutty underwear, I don't remember buying it for you" said sako's mom noticing sako's thong.

"mom, it's not what you think, I-"

"you bought it yourself, you really are a slut"

"no, mom, please"

"enough! That's disgusting, take it off right now, even being naked is more modest, and that bra too, you don't even have enough chest to use one

"mom, please, I can't do that"

"yes you can, now do it"

"but mom-"

"do it!"