First of all Cardfight !! Vanguard: Zoku Koukousei-hen tells the story after what happened in the first season but things change for 2 reasons if you have already seen the original series you will realize that only this anime serves to unite or change certain things and it would be a waste of time See it since it does not count the great thing and the second is that if you did not see the original series I recommend you to watch it because if they do not you may get a bad taste in your mouth for some things that are told differently here. Regardingthe characters they remain the same, only with some changes the good thing (in my opinion) was that they did not give so much importance to the fights "that they do not contribute anything" making it more clear that it only serves to fill the 24 minutes that lasts the chapter and therefore lengthening the series more as well as having few chapters did not have as much or no filling (which I thought I would have when I read the synopsis)

Overall Cardfight !! Vanguard: Zoku Koukousei-hen for the few chapters it has was entertaining but not enough to want to see it again as it does not contribute anything remarkable and only sees that it is a poor or mediocre (however you want to see it) attempt to want to squeeze the anime with the intention of wanting to sell the game (cards), if you want to see it ahead but if you are a person who is looking for good stories and character development this is not for you