Rign,otherwise known as demons are creatures of powerful nature. Their strength and abilities surpass that of humans. Although this is all true...

  "Are you, a Rudign?" asked Tomoe as he continued to point his scythe at the neck of the person behind the desk.

  "Y-y-y-you can thell?" said the 'Rudign'.

  "Hey Tomoe, what's a Rude-ain?" asked Nagisa while still guarding the door,

  "Spelled R-U-D-I-G-N," Tomoe put his scythe back on his coat. "they are Rign who decide to live with Rudians, or in other words, with humans."

  "So, they're not dangerous?"

  "Well, as with humans, it depends on person-to-person. So the golden-question is...what are you doing searching through the drawers?"

  "I...was.....uhh......."

  "No need to be so stiff. Get off the ground and let us talk."

  "Al-alrighth." she said as she stood up. She tried to run, but Tomoe pulled her back and sat he in the Headmaster's chair while he sat on the table. "First of all, mind telling me your name?"

  ".....Luca."

  "Alright Ms. Luca, I'm guessing you know me?"

  "Wh-who wouldn't...Gatekeeper of Worlds. There's no way no one hasn't heard that name."

  "Then," Tomoe jumped off the table and stood right next to her. "you know what I have to do next, right?"

  "N-no..."

  "Heh. As much as I'd like to continue this, we have bigger matters on our hands. Pass me your contact info and I'll check you for next time."

  "What does 'Gatekeeper of Worlds' mean?" asked Soma who couldn't hold back her curiosity.

  "It's a title. There have been cases of Rign trying to pass off as Rudign and things got bloody. The solution for it was to have somebody to check each Rudign and as far as I know, you're illegal, right?"

  "Y...yeah." replied Luca.

  "It seems you aren't dangerous but, I still need to check you." Tomoe finally finished putting her contact info into his Fult. "Alright, I have to get going. You 3, we're checking out the toilet next. Stay safe Ms. Luca and don't cause any trouble!" The 4 of them ran out while Luca just stood there motionless.

  The 4 of them walked back down to the first floor and was heading to the men's toilet until Yuuki spoke out. "umm......teacher Tomoe?"

  "Hm? What's wrong?"

  "it's...the toilet on the other side."

  "On the East Wing? I was expecting the west since the other 2 were there but....." They all stood in place for a while until Nagisa suggested,

  "Why don't we go to the equipment shed first since it's closer?"

  "I guess that sounds like a plan. Let's go." They walked out to the West side of the field(it was an extremely large field used not just for sports like football, badminton, tennis, rugby, etc., but also large gatherings/events.) and went to the storage shed.
There was no one in there.
Tomoe went inside anyway. He checked every nook and cranny of that room but got nothing. He looked at Yuuki and she was still shaking. He pulled out his scythe again and stabbed it right into the ground. Soma realised what Tomoe was trying to do and went inside, grabbed a shovel and also started digging. Nagisa stood by Yuuki, just in case.

  "How much more...do you think we have to dig until we...we find him?" asked Soma sweating bullets and out of breath.

  "Sorry."

  "...You're...joking right?"

  "The one in the toilet on the East side...is most likely the same Rign that was hiding in here."

  "UGHHHHHHHHHHHHHHH"

  "Probably, he is the same guy that was detected in the men's room or, he's working with that guy."

  "So in conclusion, we're heading to the East Wing now and going here was useless?" asked Nagisa.

  "Not completely useless. I actually found out something new."

  "What's that?"

  "It's beside the point. We wasted too much time. Soma, you seem tired so I'll piggyback you and we run there."

  "Eh, what?" Before she could even have a chance to say yes or no, Tomoe lifted her off the ground and him, Yuuki and Nagisa started running as fast as they could to the other side of the building.

  "Right here, correct, Yuuki?" asked Tomoe, whilst standing right in front of the boys' toilet. Yuuki silently nodded while backing away slowly. "...1 person will follow me in, the other takes care of Yuuki. Who's coming in?"

  "I'll do it." Nagisa interrupted Soma before she even had the chance to get a word out. "Soma's probably worn out from all that digging so I'll help any way I can."

  "Alright. Nagisa'll come in with me. You two, if anything happens, shout and run, okay?"

  "Okay. But be careful too, alright Nagi?" said Soma.

  "Okay okay. I'll be fine."

  "I feel kinda left out. You guys are flirting and I'm just left here." said Tomoe while heading in. Tomoe got a notification on his phone at the same time as Nagisa hit him on the head, so it sounded like a cartoony-sound effect. Which, made Nagisa even more embarrassed as the two went in. 

  It was completely empty. One of the stalls had a broken door and couldn't close. The others were fine but also empty. "Now that I think about it, is there any chance for a 3rd possibility?" asked Nagisa while searching the toilet.

  "A 3rd?"

  "Like, it was some kind of distraction and they're doing some stuff somewhere else."

  "It's highly unlikely."

  "Why?"

  "If you wanted to do something bad in the city, why would you cause confusion in 1 out of 11 other schools?"

  "Oh yeah, you have a point. But then, where are they?"

  "...Ah." 

  "What's wro-" Before she could finish her sentence, Tomoe rushed out of the bathroom and slashed at Yuuki's stomach. She also rushed out after hearing Yuuki's scream. "TOMOE, WHAT ARE YOU DOING?!"

  "Is he dead?"

  "Huh?"

  "YUUKI! IS HE DEAD?" Yuuki shook her head. "Tch. Where did he go now?" Tomoe then ran into each of the classrooms and searched them.

  "OI! TOMOE, WHAT'S HAPPENING?"

  "Her name is Berchta, more commonly known as 'Kustro'. Tiny little Rign who slash people's stomach if you piss them even slightly off. She must have threatened Yuuki, that's why she was shaking all over the place."

  "Y-you're joking, right?"

  "I'd be happier if I was. Those things are like ants."