Izuku didn't have anything to do after school today, so he decided to go for a walk. He was stopped when he felt something hit him. He looked down and saw a girl with long blond hair and green eyes.

"Um, s-sorry about that! I d-didn't mean to bump into y-you like that!"

"N-No, I should've been paying attention!"

The girl stood up, revealing that she was roughly the same height as Izuku. She was wearing what looked like the outfit of a nun.

'A nun? After all, being near her is giving me an odd feeling.'

The girl spoke up. "Um, if it's not too much trouble, c-could you lead me to the church? I was recently appointed as a nun."

Izuku had a bad feeling about this, but he enjoyed helping others. "S-Sure! Just f-follow me."

The girl looked at Izuku with a smile. "So, what's your name?"

Izuku was blushing. Despite having a girlfriend, he was still super shy around girls. "O-Oh, my name is M-Midoriya Izuku. W-What's yours?"

"M-My name is Argento Asia."

The two walked in silence for a bit, before Asia spoke again. "I'm so glad I met such a nice person like you! This must be the work of God."

Izuku was hit with a strange feeling when he noticed the cross around Asia's neck. "Um, r-right!"

The two were interrupted when they heard a child crying.

Asia saw a boy sitting on the ground, with a scrape on his knee, and she ran to comfort him. "Don't cry, it's just a scrape."

Asia's hands were above the boy's knee as they were surrounded by a green aura. The boy's scrape slowly disappeared. Izuku was surprised, and he wished he brought his notebook with him.

As the two continued walking, Izuku was curious. "A-Argento, is that your Quirk?"

Asia was quick to answer. "No, this is different. This is a divine power granted by God." She suddenly had a sad expression as she lowered her voice. "Yes, a wonderful power."

Upon seeing the church, Asia perked up. "Oh! That must be it!"

Izuku was a little concerned. "Y-Yeah, it's the only one in town."

Asia then looked at him. "Why don't you accompany me to the church? I'd like to return the favor!"

Izuku, remembering the weaknesses of devils, politely declined. "W-Well, I've got t-things to do, s-so I can't. S-Sorry!"

"Goodbye!" Asia turned around and headed for the church.

Izuku decided to head to the clubroom and pay Akeno a visit.

———————————————————————

A slap echoed through the room.

"What were you thinking? You could've gotten hurt, or even killed! Do not do that again."

Izuku felt really guilty. He should've thought of that. He's a devil, after all.

Akeno hugged him from behind and rubbed his cheek. "It's alright, Izuku. She's just concerned. She wants you to stay safe."

"R-Right. I'm sorry, P-President. I just... I just w-wanted to do the right thing."

Rias felt slightly guilty now. She remembered that Izuku is the type to always help no matter what. "It's alright, just please don't endanger yourself like that. Now, let's get you started with contracts."

———————————————————————

After stepping in the circle, Izuku found himself in a house. He immediately noticed a dark liquid on the floor. Upon further inspection, it was blood.

"B-B-Blood?! What's going on?!"

"Punishment for the wicked." A white-haired man sat on the couch and spoke without facing Izuku. He then stuck his tongue out and looked at the green-haired boy with a wild expression. "Well, if it isn't a devil!"

The man bowed. "My name is Freed Sellzen, and I'm a priest who's part of an exorcist organization!"

Izuku stepped back. "A p-priest?!"

Freed had an evil smile on his face. "Well, I'm definitely not a piece of shit devil like you."

Izuku looked to his right and noticed the corpse of what looked like a man. "D-Did you do that?!"

"Maybe I did, maybe I didn't. What's it to you?"

The boy backed up as Freed walked towards him.

"Oh? Is the little devil scared? Gonna run away like a coward?"

"M-Maybe I should g-get going and-

"NOPE! You aren't going anywhere, devil bastard! Getting rid of rats like you is my job!"

Freed pulled out a gun and a sword made of light. "I'll plunge this sword deep into your heart, and maybe put some bullets in your brain!"

The crazed exorcist lunged at Izuku, who narrowly avoided being cut by the sword. He then fired a shot which struck the boy's leg.

"You like that, you piece of trash?!"

Izuku simply looked at the man with a fearful expression as he summoned his Boosted Gear.

"How devilish! I love a good fight!"

"D-Don't come any closer! I-I'm warning you!"

The exorcist smile grew wider. "Oh? What are you gonna do? Hit me? I'd like to see you try, you little shi-

The man was interrupted by a scream as a familiar blonde nun walked into the room. "M-MIDORIYA!"

Freed's wicked smile slightly died down. "Asia, do you know this sinner? You should've brought him to me. I would've given him a slow and painful death!"

Asia was shocked. "T-This is-

"You see, Asia, this is our job. We exterminate godless pieces of trash all the time!"

Izuku looked at Asia, feeling guilty for lying to her. "S-Sorry, Argento. I-I'm a devil. I should've told you s-sooner."

Asia looked like she was about to cry. "M-Midoriya is..."

"I wasn't trying to f-fool you. I wanted to b-be your friend, but I understand that it's just not m-meant to be."

Freed looked disgusted. "Oh my, how touching." He then held his blade to Izuku's neck. "You ready, kid? Here it co-

He was interrupted by a table hitting him, causing him to lose his balance. "OUCH! What the hell was that for?! Don't you know how much I paid for-

"Can it, altar boy."

Izuku looked up and noticed his friends. 'I'm saved!'

"The hell did you call me, you stupid loli?!"

As always, Koneko had a neutral expression. "Altar boy. Want me to say it louder?"

"Nope, I heard you. Now, if you'll just let me exterminate this devil right here, I can-

Freed was interrupted yet again, this time by a bolt of lightning.

"Would you cut that out?! I'm trying to- huh? Where'd he go?"

The exorcist looked in the direction of the devils and saw that Izuku was now with them. He lunged at them with his sword, but was intercepted by Kiba. "You devils have a swordsman? This ought to be fun."

"Well, sorry to ruin your fun, but we can't stay for long. The boy's with us."

Rias looked at Akeno. "Akeno, prepare a circle." The latter did so while giving Izuku a worried look.

"P-President! Let's t-take her with us!"

Rias frowned. "Sorry, Midoriya. Only members of my household can use this circle."

Izuku looked at the nun. "I'm sorry, Argento."

Asia looked back at him with a teary smile. "Goodbye, Midoriya."

The devils disappeared in a flash of light, leaving the exorcist and the nun alone.

———————————————————————

"Izuku! I was so worried! You were out for so long, I was so scared!"

The green-haired boy blushed as Akeno held him tightly. "I-I'm sorry for making you worry."

Feeling relieved, she kissed his forehead "I'm just glad you're safe."

Rias cleared her throat. "No, it's my fault. I sent you to that house without knowing anything. I should be the one apologizing."

The room was silent for a bit, but then Izuku spoke up. "P-President, what should we do about Argento?"

Rias sighed. "Normally, I would tell you to forget about her, but I can tell that you're hell-bent on saving her. I'd be a bad master if I ignored the desires of my servants."

Izuku perked up. "R-Really? T-Thanks, President!"

Rias softly giggled at Izuku's cuteness.

'Now, if only I could do something about the engagement.'

———————————————————————

That was longer than I expected. That's a good thing, though! I'm aware that this story has been quite rushed so far, so I'm trying to get better at pacing. Believe me, I am trying!

I'm following the canon, but that's only because I don't trust myself to come up with original plots, settings, etc. and not have it suck. Keep in mind that I'm a newbie and not a veteran author.

Well, that's all for now. Until next time!