The MC's original life involved growing up in Japan with a bad case of chuunibyou.  However, he was somewhat self-aware of his chuunibyou condition, realizing the limitations that being an ordinary human had placed on his efforts to reach his goal of being some dark champion of justice (but only justice as he saw it) that lives in the shadows.  As part of his efforts to reach that goal, he studied various martial arts and trained his body, but also focused on the Clark Kent aspect of his life.  

Kal-El couldn't just take off his super suit, put on a T-shirt and jeans, then stroll around as a really buff guy that happened to have the same face as Superman.  No, he had to change his hair a bit, put on glasses, then put on the mild-mannered act to blend into the background and not draw attention to himself.  Of course, the MC's secret life is closer to Batman than Superman, with the fanatical training of his body and mind, learning every style of combat that was available to him, acting in the shadows, and fighting dirty when it will give him the advantage... But he didn't have Bruce Wayne levels of money, so he went with the Clark Kent approach, making certain his grades were just slightly below average (when he could have been at the top of the class, as he put more effort into his studies than his classmates who did things like 'have fun'), working hard to not draw attention to himself, living his public life as the ideal background character.

And this is where the MC stands out from the typical chuunibyou.  Instead of acting out and openly talking about being the bearer of a cursed eye, the MC turns it all inward, trying to make his fantasy a reality through shear effort, but he realizes that it is just a fantasy, because he hasn't reached his goal.  He is still human and stands no chance against a nuclear weapon.  To stand up to a nuke, he needs something more than a trained human mind and a trained human body.  He needs something paranormal.  Magic.  ESP.  Anything that he can somehow awaken and become something more than human.  While practicing meditation and anything else he can think of to try to awaken a paranormal power, he gets a bit delirious and sees a light that he thinks is the glimmer of his coming awakening, so he runs toward it.  But it turns out to be the headlights of truck-kun (or was it bus-kun?), running him over to send him off to his next life in an isekai world.

In this new life, he discovers that magic exists in this new world.  His goal is finally within his grasp.  He retains the knowledge and experience of his past life in Japan, but his new body will need training to bring it up to the level of the body that he had when he died in Japan, and he will have to study and master magic, but he has the mind of a high schooler in the body of a child, along with the fanatical obsession to train himself, that he had in his previous life.  After reaching a point where solo training is no longer efficient, he takes a similar approach to what he had done in Japan - hone his skills by wandering the steets at night, beating up street gangs, but in this new world he has bandits to beat up.  

While beating up bandits, he encounters a girl that has a form of blood curse.  In this world, when people show signs of having the blood curse (they start changing into something that no longer looks human), their families and friends don't just disown them, they discard them and try to wipe out any memory that they ever existed.  The MC uses his magic to cure the girl.  She has seen his secret side, but she is someone that no longer has a place in society, no longer has a name.  He decides to call her Alpha and takes her in.  He ends up talking about various things, including tales from his past life in Japan, which he expects her to view as nothing more than fantasies, tall tales from the mind of a child.  Later he rescues and cures another girl that has the blood curse, naming her Beta.  Eventually, he has a group of these girls he has rescued and cured.  He teaches them various things (including magic), and one day they all leave.  He accepts that this was bound to happen someday, as they would grow tired of his chuunibyou antics and move on with their own lives.

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Shadow Knight: Such raw power. Might you be the hero?
Rein: I am not  gonna take insults from you!

Take a look at cults that have existed over the last half century or so.  They take in teenagers that feel their parents didn't give them enough love, brainwash them into thinking the cult is the only entity that cares about them, then puts them to work for the cult, 'giving their life purpose'.

In this world, the MC wasn't trying to make a cult.  But these weren't teenage girls that thought their parents weren't giving them enough love, these were teenage girls that their parents had paid people to dispose of them and wipe out any trace that they had ever existed, because of the social stigma attached to the curse.  The girls that he personally had cured and taken in, became the apostles of this cult.  They then went out into the world to find disciples, curing other cursed girls using the magic cure they had learned from their master, then giving those disciples a purpose as part of the cult.  It snowballed in a very short amount of time.  

As an organization grows, its operating expenses grow.  They needed a source of income, so they turned to the teachings of their master (his stories from his previous life in Japan).  One of the common tropes of isekai is a reincarnated person using knowledge from their previous life to introduce a product into that world.  Invention is a mixture of inspiration and perspiration - he had given them the inspiration with his ramblings about the wonders of another world, and they had a small army of fanatics willing to focus on making those wonders a reality (and magic can create some shortcuts in this process).  

In a world without internet or electronic mass communications, merchants are a good source of information, as they use their networks to gather intel on things that could impact their business, even offering that information to others for a price or giving it away when it benefits them.  Building a merchant network served two purposes for the cult.  It provided an income to cover their growing expenses, and it created an information network for them to gather intel and pass it along within their organization.  The original apostles became the board of directors for this company that became the public face that the cult showed to the world and maintained their positions as apostles of the cult that existed in the shadow of the merchant company, with Alpha as the chair of the board and the first apostle.

When the MC sees what they have done, he's somewhat irked that they used the knowledge from his rambling stories to do the classic isekai 'get rich off of introducing products from another world', while he struggles on a student allowance with the extra expenses of obtaining props for his chuunibyou fantasies of acting out his role of operating in the shadows (it really is something that is easier to do with Bruce Wayne money, instead of Clark Kent money).  But he knows that following that particular trope would be an impossible conflict with his own goal of presenting himself as the perfect 'average background character' to the world.  He still doesn't realize the scale of what they are doing, and mentally pigeonholes it as them following that trope and getting rich off of the otherworldly products he told them about.

"I know how we can win. What if we try and use our brains?!"

"I hadn't considered this.  What an incredible idea.  We can't lose!"

Also Aki about to see the future devil.  Hype.

what would happen if the gate closed and how the military functioned cut off from their supply chain. Especially if they had to engage in more large conflicts.  

My favorite part was the end of their first day of training. Denji is laying on the ground babbling incoherently, and Power had to beat him to death to get his brain to reset.

Type-O-Gurts!

Looper.

That movie had one of the greatest and most creative scenes I've ever seen in a scifi time travel setting.

The way her limbs vanished one by one reminded me of how they would use the younger version of a Looper to coerce or even kill the older version if necessary.

The thought of digits and limbs spontaneously disappearing is really creepy.

My question is about Makima and the Future Devil. There's no real point to my question, other than wondering if my hunch is right.

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No

also no