A few things I hated about it:
-1: the cars were really good, but I could only drive them in this stupid itasha livery of the characters
-2: every time a race started for a specific car, the game would play a quote from a character that car represents (I had to mute my phone any time a race started)
-3: while it was easy to progress through stages, it was a really grindy, and earning the cosmetics for the cars was quite difficult (I only got the livery for the most basic car, the Mitsubishi Evo X, though I'm not proud of it)
-4: it was a my hero academia event. I don't hate the show (I'm not an anime fan in general), the fan base it what makes me hate it)