Holy Valkyrie ExS TIA P is a casual action game developed by Lusterise that blends magical girl themes with combat gameplay. You play as Marina Katsuragi, a bright and cheerful heroine who unexpectedly encounters a creature named Aramaki and gains the ability to transform into the magical girl Pastel Marie. Your mission is to track down and destroy monsters while closing interdimensional portals that randomly open throughout the world. The game is a visual novel with a single ending, which can be completed in approximately 20 minutes from start to credits.

Holy Valkyrie ExS-TIA F is a visual novel that follows the life of Haruna Aikawa, a diligent and exemplary student. At first glance, her everyday life in the tranquil town of Kawado Higashi, where life flows smoothly, seems unremarkable. She is known for her positive attitude and strong character, which allows her to easily connect with others. However, her heightened sense of duty prevents her from relying on anyone's help. Initially, Haruna ignores a series of serious incidents disrupting public order. Everything changes when she accidentally overhears her classmates talking about a recent street attack. Realizing the imminent danger, she finds herself drawn into the epicenter of inexplicable events.