#the world's called Mahokai

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I have a world kinda similar to this!

My explanation is basically "Magic". The world is divided in five regions, one for each season, and a Forbidden One. There's a whole ritual related to the change of season, because of the Lore it has to be manually done.

At certain dates in each region a small group of people start travelling and bring "their" season to the next region, the next region does the same for their season and so on, allowing the next region to experience the next season. So technically yeah, you could follow spring forever!

fantasy world where instead of a northern/southern hemisphere with opposite seasons, the seasons roll around the world like our day/night cycle. If you keep traveling in the right direction at the right pace you can follow spring forever