Because season 1 was 79 chapters, and season two was only 29. Literally less than half the length by like 10 chapters slayer
to be fair they did change their original plan in order to keep the series around 170 chapters, if they went with the original plan for 3 parts instead of 2 then the series easily would have been closer to 300 chapters.
why did that season feel so short? i am very curious how this last season will play out when they just now introduced a new? antagonist?