What happened in the last 20 years

"It has been a long time since I last saw you master I have grown older and became king of a nation and yet you still look exactly like you did 20 years ago," Tony said

"For me, it's been a day" Grimm responded. "Who are the people who arrived with you," Tony said. "They are people that I met after leaving the demon king's castle, you all can get acquainted later but what happened in the time I was gone," "In the last 20 years, many things happened Neko left and founded a nation of beast-men, dungeons, and unidentified monsters and structures have appeared. The continent changed when all this weirdness happened and the land changed to be shaped sorta like a pizza and each nation gets one slice so the land was divided into eight factions humans, beast-men, goblins, demons, elves, dwarves, dragons, and undead each with equal land. That's not even the beginning of what happened islands were discovered in the sky, and some nature and mountains became sentient which makes it harder to travel when a whole forest is against you. Also, the other summoned people started wandering around the continent. Finally, creatures have become more active lately and there have been more attacks on civilians, monsters are also growing in strength, and things were looking a little grim (no pun intended) in some places of this nation. Now that you are here master I think things will get better," Tony said.

--some undisclosed location--

The two beings were talking to each other "humans completed the pre-game content very fast and now are on Chrastale, I was expecting four months at the earliest not one day that means we need to speed up phase two," B1 (I have decided to call these beings by numbers so it's easier to understand when it is them talking and if you don't know the B stands for Being) said, "Agreed we need to speed up the plan, by the way, which one of the four planets are the first arrivals from?" B2 asked." "Earth."

--Chrastale 20 years ago -- In the throne room--

"The heroes have returned victorious against the demon lord, today we feast and celebrate," The king said.

--20 years ago streets of the kingdom on the festival day--

Later that day a festival was held for the two heroes that returned and in memory of the one that did not. There were lights decorated every corner of the capital people getting drunk in the streets, and people celebrating and spending time with their loved ones, stores had special sales, and all across the capital every citizen was enjoying the festivities, but the festival was cut short due to a massive rumbling item were falling off shelves of stores people fell down "what is going on someone said," and that was the start of the change and collapse of the old world into a new era.

--20 years a certain crater near the capital--

A skeleton appeared almost out of thin air it was the lich Gary who died to a "random" meteor "I am alive now, I died, but since I live again I will have my revenge!"

--19 years ago capital Kisune on the outer wall--

"the city is under attack from all sides it seems hopeless on top of that the king fled after emptying the treasury what do we do," Guard captain Jones said to Tony "we fight, and we win,"

One week later all the monsters had either died or fled and then Tony was coronated as king one month later it was decided by all of his achievements in saving the capital and then Neko left on a journey of her own.