I'm gonna just copy paste a post I made before about this:
"The way japan defines Isekai is just 'a different world' so any story that doesn't take place on Earth and is instead a made-up world is an Isekai. It's just that in English parlance we use it as blanket term for all the sub-categories...
A slow amount of quality chapters over a longer period of time wins over a rushed huge dump, methinks. Means we can have more time to comment on the fun stuff.
The pose, the weird button on one side and the soccer ball to the side in the last panel mean it's Conan. He often kicks a ball with high power kicks at fleeing people.
Nobility is kinda weird here that was basically a very fancy engagement ceremony, but they have not been fully wed yet. Yeah. All that pomp and circumstance just to say 'we are engaged, gonna marry ~in the future~ but not right now due to not being fully proper educated nobles'