Hanami was one of the returning villains seen in Season 2 when Geto and his group enacted their long in development Shibuya Incident plan.

Source: https://comicbook.com/anime/news/jujutsu-kaisen-season-2-hanami-anime-cosplay/

If you did not know, the show has been the talk of the anime fandom this season, and it is thanks to the Shibuya Incident arc.

Source: https://comicbook.com/anime/news/jujutsu-kaisen-season-2-nobara-death/

Recently, a director on the latest episode of second season took the opportunity to discuss fan concerns and state that harsh work conditions had an effect on the overall product that is the Shibuya Incident Arc.

Source: https://comicbook.com/anime/news/jujutsu-kaisen-director-disappointment-mappa/

The Shibuya Incident Arc has been incredible so far, with twists and turns that left viewers on the edge of their seats.

Source: https://screenrant.com/jujutsu-kaisen-yuji-resist-sukuna-geto-kenjaku-choke/

The "Shibuya Incident" arc is considered the greatest arc in the manga series.

Source: https://collider.com/jujutsu-kaisen-season-2-trailer/

With the Shibuya Incident Arc now over in the printed story, Gojo is dealing with an entirely new problem that many fans of Jujutsu Tech are quite familiar with.

Source: https://comicbook.com/anime/news/jujutsu-kaisen-season-2-irl-prison-realm-buy/