Disclaimer

High School DxD is owned by Ichiei Ishibumi / Funimation

Undertale is owned by Toby Fox

He awoke a few minutes after sunrise, as he always did. He sat up and did the usual yawn and stretches, getting out of bed and making his way to the bathroom. He did his usual morning routine (making certain he didn't use his uncle's toothpaste again) and made his way downstairs for breakfast. His sister was stuffing protein bars into her gymbag, and only spared him a quick glance before speaking.

"Hey punk. I'd offer you breakfast…"

Oh God no…

"…but 'mom' already made you a plate and I gotta get going."

Oh thank God…

She slung the bag over her shoulders and shouted a quick 'See ya!' before taking off. He opened the refrigerator to reveal a cinnamon bun and a cup of milk. Anyone looking at him would say his eyes sparkled at the treat before him. Metaphorically, due to the fact his eyes never seemed to open. He finished up and grabbed his own bag before heading out. It wouldn't be good to be late for school after all the trouble his mom went through to get him in.

He headed into the school, ignoring the whispers around him. He had expected it of course, he knew how he looked. He went straight to the teacher's lounge and caught the attention of the nearest one.

"Er, hello? Who might you be?"

He handed a letter to the teacher and after she read it realization lit her face.

"Oh! You're the new transfer student? Well just head on to your classroom, they should be ready for you by the time you get there."

He nodded and made his way to his class. The door was open and the teacher smiled when he saw him.

"Ah, you're here! Come in, come in! Class, we have a new student joining us. His name is Frisk… Dreemurr?"

Issei looked up from his desk. What the hell kind of name is 'Dreemurr'? Or 'Frisk' for that matter? Damnit, it was probably some foreign guy all the girls would fawn ov-

'Wait, what?'

A kid, about as tall as the school's 'mascot' Koneko Toujou, walked into the class. Long brown hair, eyes practically shut, his mouth a neutral line. Issei breathed a sigh of relief. At least he was too young to go after girls.

'Wait, why is he covering his ears?'

"EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEK!"

"He's so cute!"

"I want him to sit on my lap!"

'What the hell!? Why are the girls going crazy over him!? He's just a-'

A thought floated into Issei's mind. A memory of one of Matsuda's rants. Issei's eyes widened, his breathing stopped. One word passed his lips.

"Shota…"

He learned early on the result of most women seeing him. At least they knew he was boy. He was tired of all the old ladies saying how cute he would look in whatever dress or the kids asking if he wanted to have a tea party. He only wore the tutu once and that was because it was the only thing he could find. Though he had to admit, he was somewhat surprised how high a pitch they could reach.

"Oww… Right. Why don't you take a seat by Hyoudou-san?"

All the girls immediately began protesting the idea. Apparently they were worried the boy's 'weirdness' (he didn't know why they seemed to hesitate when they said that). The teacher tried to speak over the noise but couldn't quite manage it. Eventually, his face morphed into a fierce frown.

"Enough!" His shout caused all the students to recoil, "Dreemurr-san will sit by Hyoudou-san and that is final!"

The girls sent him sympathetic looks, but he just maintained his neutral expression as he took his seat. He took his books and pencil out of his bag and the whispers began anew.

"Wait a minute. My sister has two teachers named Dreemurr! There's no way they're not related!"

"Isn't that huge guy that owns the gardening shop named Dreemurr too?"

"Yeah! …but didn't he say he was divorced?"

"Poor thing…"

'Oh, not this again…'

Most of the girls gave him sympathetic glances again, some even sniffling. Everyone always assumes the worst when they hear that. Honestly, it was getting ridiculous. Sure, his mom was a bit… okay, very cold towards his father, but it's not like they were tearing each other apart when they saw each other. Heck, she stopped glaring at him years ago!

The boy next to him made a strangled noise, and when he looked over at him his face seemed to struggle between emotions.

'…Is, is he having a stroke?'

'Are you freaking kidding me!? Why!? Why does he have to sit next to me!? It's not bad enough he stole the girl's attention but he has to sit there reminding me too!? '

'Ah well, I'm sure he's fine.'

The school day ended quickly enough and he decided make his way through the park. No one would be home for a little while longer, so why not? Along the way he picked up a flier for the school's Occult Research Club and took a look at it as he walked. It wasn't very descriptive, all things considered. He walked to the left to dodge the magic spear that came from behind.

'Maybe there's a code or something?'

He walked to the right to dodge the second spear.

'Something from some obscure myth, maybe. Have to really know your stuff to figure it out.'

He rapidly hopped from side to side to dodge the volley of spears sent his way.

'Huh, she usually doesn't throw them that slow. Probably didn't get her massage again. Seriously, how her muscles aren't-'

"STOP MOVING DAMN IT!"

'…Wait, that's not sis.'

He turned around to see a girl in a gothic Lolita dress glaring at him. She had a spear in each hand and two black wings stretched from her back. He tucked the flier into his pocket as she started to hover. For the next few minutes he dodged her volleys until a man in a trenchcoat with similar wings appeared.

"You still aren't finished Mittelt?"

"Shut it Dohnaseek! Why don't you try hitting him and see how far you get!"

Dohnaseek chuckled, "As you wish." He landed and produced two spears, crossing them like swords, "Let's see how you do against a real warrior."

Frisk looked to the side and picked up a fallen tree branch. Dohnaseek grinned maliciously as he charged, respecting that the boy at least had some bravery. Their weapons met and Dohnaseek went wide-eyed when Frisk not only blocked his weapons, but pushed him back. Their positions reversed and Dohnaseek found himself frantically using both spears to defend against the onslaught. Dohnaseek mentally slapped himself for forgetting he had wings and retreated next to Mittelt.

"Not so easy, is it?" Mittelt sneered. Dohnaseek just growled and Frisk pulled a bottle from… somewhere. After taking a sip he turned and ran faster than either of them could follow. "Great. That bitch is gonna get so up our asses for this."

"It doesn't matter. Skilled or not he's still just a child. Next time, he will not survive."

"You're just mad he kicked your ass."

"Shut it, brat."

Frisk was hoping he managed to get home before anyone else did. He'd rather not worry anyone but there was no way he could lie to them if they asked why he was late. He tried to slowly open the door, but almost fell over when his mother opened it.

"Oh! There you are, my child. What was taking you so long?"

He leaned to look around her and saw the rest of his family sitting around.

"Eh, I wasn't worried. After all, my training prepared him for everything!"

"…Um, Undyne? Weren't you and Papyrus the ones that wanted to form a search party-"

"Alphys!"

"S-sorry!"

"Indeed! We didn't want to form a search party! We wanted form a search team! The search party would be for after we found him!"

"Er, everyone, I believe we're getting off track. What happened, Frisk?"

He sighed and told them about the girl that had attacked him-

GASP!

Oddly enough, that gasp came from Undyne, who started laughing a moment later.

"Frisk got a girlfriend! And she's a TSUNDERE! AHAHAHAHAHAHA!"

He facepalmed as everyone began giving him dating tips, bar his mother who just giggled behind her hand.

Sans was gonna have a field day with this…

Raynare glared at Dohnaseek and Mittelt, "You couldn't kill a child!?"

"Not our fault you didn't tell us he had magic!" Mittelt shouted back.

Dohnaseek nodded, "Skilled as well, considering we able to put me on the defensive."

"HE. WAS. A. CHILD! You two weaklings lost to an insect, even for human beings!"

"Wow. Guess your opinion of them has really FALLEN, huh?"

The four Fallen Angels turned around and drew their light spears. A short, slightly-chubby man stood in the entrance of their hideout, both hands in his hoodie's pockets.

"Howdy."

"Who are you?" Raynare growled.

"Name's Sans. I'm kinda like a big bro to Frisk, you know, the kid your lackeys attacked."

Raynare snorted, "So, what, you're here to get revenge?"

"Nah, I'm a bit of lazy bones. Plus, the kid's probably forgiven them by now. Just here to warn ya: if you're thinking about attacking the kid again, don't.

"Or what?" Raynare challenged with a vicious smile.

Sans just closed his eyes and chuckled, "Or…"

YOU'RE GONNA HAVE A BAD TIME

AN: Oh plot bunnies, you majestic beasts. Anyways, I don't know why I this is a thing I wanted to do, but next chapter will involve lots and lots fire.