However, the anime industry is unpredictable. A random announcement in a magazine or at a festival could happen tomorrow. Until then, we have the memory of Hina dropping a UFO on a Yakuza car and the legendary "Rock, Paper, Scissors" tournament.
It’s been several years since the anime first aired, and yet, the cry still echoes across the internet: hinamatsuri season 2
Most anime seasons are produced primarily to boost sales of the source material (the manga). The 2018 anime adapted roughly the first 6-7 volumes of the manga. Since the anime ended, manga sales saw their spike. Typically, studios see no financial reason to fund a second season once that initial boost is over. However, the anime industry is unpredictable