Su Chen obtained the 'Multiverse Mashup', which grants him a reward as long as he creates a derivative short video and shares it across the multiverse.

And so... [Sasuke's massacre of Sukuna] [Yoriichi Tsugikuni's marriage to Muzan] [Shirou Emiya's family's meal] [The life of the tyrant Kuma]

[Lu Mingfei and Erii's wedding] [Loki becomes the Lord of the Multiverse] [Madoka Kaname and Homura Akemi's unspeakable secret] etc.