Cirno's face is from Jujutsu Kaisen, when Gojo Satoru said that he'd win the fight with Ryomen Sukuna, which later become the meme nah_i'd_win_(meme).
Izayoi Sakuya's face is a mimic of Dio Brando, who comes from Jojo no Kimyou na Bouken. He can stop time and throwing daggers is one of his main attack methods, just like Sakuya. Moreover, their standing poses are similar, so some says that Izayoi Sakuya is the daughter of Dio Brando. Btw I also mentioned that her character tag is missing.
Kirisame Marisa in the background appears in the form of dancing_toothless_(meme), which originated from the YouTuber Cas Van De Pol's troll over the how_to_train_your_dragon_(series), https://www.youtube.com/watch?v=4dDUWRWqcIo .
Also, Flandre and Reimu also appeared in meme form, but I can't tell the exact names of them because I forgot 😭