[wuhugm]

Originally Posted by Senia

Really not that far in myself but...

Spoiler:

The general information I know so far is: Kaito was summoned when he was around 13, traveled across the world, several continents even to achieving various typical heroics like making peace between various races, abolishing slavery and in general bringing peace to the world. He's an EX rank adventurer that only around 10 have existed in the 1000 years history of the adventurer union and his biggest achievement is, of course, fighting against the demon lord and enslaving her.

After finishing traveling, he settled down becoming a duke in a certain country, starting territory management. He's a genius of combat with extremely high magic and modern age conception meanwhile the demon lord is a genius of magic and technology, combining their two powers they invented many things but their territory management was cut short as Kaito was rolled into an aristocrat mess. Knowing that his continued existence would only bring further chaos, Kaito decided to return to Earth and the only person he bought with him is the demon lord.

In Earth Kaito and the demon lord can both use magic fine but their magic is so powerful that it affects their surroundings so they usually suppress it to the limit. As a side effect of suppressing their magic, Kaito's emotions were suppressed making him have a somewhat calmer personality and the demon lord turned into a loli along with (supposedly) making her more childish. A good chunk of the story is apparently spent on side stories of their time in Earth (haven't got there yet myself).

Cue the start of the story after several years passed and he, along with the entire school building is summoned to the world where it turned out that 300 years have passed since.

Haven't gotten far enough to talk about what happens later in detail but for time being it seems that a good portion of the students intend to become adventurers to look for a way back. Kaito feels responsible for this incident so he wants to support them as much as possible. Kaito has already reunited with descendants of his friends as well as surviving companions.

He also met one of the two children mentioned in the op post (other one is missing and possibly responsible for this incident) and already had sex with her along with someone else at the same time.

In the latest portion I read the demon lord found time and developed VR technology in her laboratory that was apparently left alone for these 300 years. On that subject, a lot of their technology didn't develop very well because both of them were the core of the research and they went missing 300 years ago. No one could understand the theory behind their technology so they could only make inefficient intimidations of it which only arrived at practical use recently much to her dismay (including stuff like flying ships, something like powered suits(?) etc).

That's about it for what I've read so far. Do note that the start may be pretty wordy in explanations because Kaito gathers information on what changed in these 300 years as well as general explanations of the world

So what is his cheat? All magic? Any Kouki here? How many classmate heroines so far?