I've always been fascinated with the concept of railguns.

I mean, using electric currents and magnetic fields to launch the projectile? That sounds dope as hell. Now, most railguns for military use I've seen are quite large, like building-level large, and the small ones don't pack much power in them.

Problem is, I want to make a somewhat portable railgun—one I can comfortably hold up with telekinesis, at least. So, like, times one point five the size of the Hecate maximum, perhaps?

When I proposed this idea to Sariel, she was immediately invested in it. This woman, I swear, loves artillery as much as myself. Man, I can't wait to get to know her better and become her lover slowly. I wonder how would she do in bed, hm?

Nevertheless, after a few months of researching and experimenting stuff, we finally have a somewhat completed prototype of a portable railgun in our lab. Of course, we infused magic into it. Why? So it shoots even better, that's why.

By enforcing the material of the gun with basic hardening magic and then amplifying the electric currents with raw lightning magic, we were able to make this terrifying weapon. At least that's what Sariel said. I've been going on lots of dates lately, so she completed it for me.

Right now, standing in front of the railgun, my heart is beating fast.

''Phew... Sariel, I'll do it.''

''Go ahead.'' Sariel lightly strokes my head with a smile. ''Take it and move to the range.''

''Mhm...''

So I slowly begin to take the covering cloth off the stand, revealing the product inside.

''Woah...!''

It's beautiful...!

A gun slightly shorter than the Hecate, has an overly sci-fi design with a half-see-through exterior, an overall white-colored body, a few Lapis Lazuli finishes here and there, and most importantly, a super long barrel!

It looks like one of those snipers in sci-fi FPS games, not like a 'railgun' at all... And, well, I was the one who actually made half of these parts, including the long barrel—I love long and hard things, as everybody knows—but I still find it incredible.

Alright, let's go to the shooting range and test this baby out!

''Oh, now that I think about it, this is a baby between you and me, Sariel.''

Not forgetting to throw in a sex joke, I hold the gun proudly to Sariel. In response, she just looks at me blankly with the same slight smile, although she does seem a bit irritated.

''Please don't make such jokes again.'' She says.

''Um, well... You can't handle it anymore?'' I ask.

''Seeing you specifically every day has greatly enhanced my desire for flesh, yes.''

You could be reading stolen content. Head to Royal Road for the genuine story.

''It's been a month already... We can do it more frequently, you know? I allow it, and my fiancés also don't mind.''

Sariel, in a white coat, grumbles a bit like a distressed scientist. Eventually, she nods.

''Fine, let me join this weekend, please.''

''Well? I especially love this baby, and you contributed a lot, so we'll do it alone. Have three of me for yourself.''

I can make two clones now. I nearly lost my mind all the time in bed, but it's great.

''Thanks, I guess.''

So, with an appointment for sex established, we move to the shooting range on the ground. The lab itself is built near a desert, particularly for gun testing, so it's quite convenient.

Mounting the beautiful railgun to a magic-constructed stand, I swiftly insert the magazine in. It makes a really satisfying clattering sound, damn.

''Man, it would be so cool if we have, like, a digital display on this. For ammo reserve and stuff.'' I speak up while aiming around with the iron sight.

''I can look into it later. Shouldn't be too hard.''

''Hey, Sariel. Do you know that I love you so much?''

''Yes, yes...''

''No, really. We've spent half a year together already, and I think I like you as a romantic partner.''

''...How so?''

''Do I need to list them all for you? What happened to the confident Sariel I knew?''

''...''

No, but like, I love her bed skills. A lot. I think I know why some people like women with experience, although this case with tentacles is a bit cheating.

After throwing some more compliments toward Sariel—and a peck to her cheek—I get right to shooting.

The target is a bunch of roughly made houses in the distance. Now, the main point of this test is to determine the penetration capabilities of the bullets coming out of this gun.

We intend to make this an AP-centered rifle, considering the fact that railguns' projectiles have higher velocity than regular explosive-powered rounds. That's why we made the bullets for this one unusually hard as well. A bunch of mana-enforced diamond tips. Should be potent.

I calm my breath one last time before pulling the trigger.

As soon as I do that, I can feel faintly the current running through the interior of the gun. It takes exactly 0.5 seconds for it to charge fully and with rather clear buzzing noises—

BOOM—!!

The diamond tip is shot out at incredible speed, quickly penetrating all buildings in the distance, and collides with a mountain behind. Sand is blown everywhere.

''...''

...Shit. This is too cool.

I mean, look at the gun. It's still zapping lightly at the end of the barrel as well; just how cool is that?

Kinda reminds me of Tina's womb-zapping technique, but I digress.

''Let's go check it out.''

''Alright.''

So we quickly fly over to inspect the damage that this thing did.

Let's see... The buildings are cleanly penetrated, and the mountain...

''Wait, I can't find the bullet?''

Even with my decent earth magic, I still can't find the bullet... Hm?

''Don't tell me...''

''It went through the mountain entirely.'' Sariel comments.

Holy crap...!

''So I'm assuming that the other version would be much stronger?'' I turn to the dragoness.

''It should be, yes.''

gulp—!

''Alright, let's test it out.''

After coming back to the shooting position, I take out a blue cylinder-like module from the side of the gun and replace it with a golden one. This process is to change the energy that it would use to fuel the shots from mana to divine energy.

Yup. Divine energy.

This module acts as a battery for the shots, and because divine energy is harder to contain and scarcer than mana, it will only be able to fuel three shots. I can directly charge it with my energy, though, so that's nice.

''Phew...''

This time, Sariel made a sturdier target for us, which comes in the form of multiple thick metal walls.

When I pull the trigger, once again, the energy inside the gun rapidly concentrates.

BOOM—!!

This time, it only takes 0.2 seconds for it to launch the diamond tip.

The bullet rips through the air, shining like a comet while leaving behind a golden-white trail. Then, with multiple screeching sounds of metal being pierced, it punches through all the walls Sariel made and flies off into space, I'd imagine.

''...How many walls is that, again?''

''A hundred. Each is ten centimeters thick.''

What the fuck did we just make...