Magical girls: eternal is a 2 part crossover movie where madoka magica sailor moon precure etc. get teleported to a random place and a curse is spreading can they stop it or will they get cursed.
Poster
(spoilers chibiusa falls ill with madoka and they turn into babies for 23 minutes (part 2) and in part 1 madoka and chibiusa switch ages)
cast:
Other magical girls (side)
chibiusa (main)
madoka (main)
sakura (main)
miyuki (main)
doremi (main)
the curse (antagonist)