Holy Valkyrie ExS-TIA P

By chance, Marina Katsuragi crosses paths with the creature known as Aramaki and gains the ability to transform into Magical Girl Pastel Marie. A magical girl’s duty is to close up dimensional portals that occasionally appear. However, the miasma that seeps out from these portals also turns human beings into monsters. So begins Marina’s secret war to defeat these monsters and safely close the dimensional rifts.