This is official art its from the 1•2 rewrite anthology
I will zoom in on some now
Chihiro and alter ego
Naegi and his two gfs
Despair sisters and monokuma
Mikan, hiyoko, teruteru, and mahiru. Somebody please give mahiru a break
Sonia and Kazuichi who looks to be on a giant version of minimaru
Twogami maid dress (and tiny hiro)
Maid komahina with tiny Mondo, Taka and Leon in the bg
Chiaki my beloved
Gundham with the devas,,, also celste and hifumi
Sakuraoi
The only important thing about this ine is nekomaru carrying fuyuhiko while peko just watches