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Shy and quiet by nature, Alesha is more likely to be found tucked away in a corner with a book than engaging in small talk with coworkers or friends. Her reserved temperament shows through in her difficulty with social interactions, and she's utterly hopeless in crowded settings.

Although she's the type who looks slim in clothes, Alesha is actually quite well-endowed.

Birthday: May 3. Height: 141 cm (4'7"). Weapon: Railgun blade. Birthplace: Unknown.

Often seemingly lost in her own world and hard to read, Selene is actually full of passion and a little clingy beneath the surface. Animals are naturally drawn to her, and she cherishes them just as much. Petite in build, she's surprisingly fit and toned.

Birthday: January 18. Height: 158 cm (5'2"). Weapon: Stun rods and heavy pistols. Hometown: District 81, Yamato.

The honor student heroine. Gifted with brains and beauty, her academic prowess and perfect figure have earned her the admiration of her classmates — both men and women. Although serious on the outside, Saki indulges in small pleasures, like secretly writing romance light novels, a hobby she hasn't shared with anyone.

Fragments scattered across the world stand as silent witnesses to the pain of a forgotten age.

Each time our heroines reach for them, they find themselves caught between what once was and what is yet to come.

Within the flow of their ordinary days, desires take root, compelling them to make their choices that will shape their fate.

Thus begins our story, shaped equally from their sins and their prayers.

Hart Grancer, a former mercenary turned agent of the Ancient Prehistoric Civilization Central Intelligence Executive Agency (A.C.E.), has infiltrated the Academy, a school run by the very agency he serves.

But what seemed like a simple assignment at first — coaching a group of girls, each with their own mysterious reason for being there, and handling miscellaneous tasks from the A.C.E. — quickly turns into something far more dangerous than anticipated, as Hart is tasked with recovering a Grimforge — an ancient artifact at the heart of a massive conspiracy.

Amid the rush of their busy days, brief moments of calm appear. In these quiet moments, subtle gestures and fleeting smiles come to light. It is here that the distance between you and the heroines narrows — a small promise of a future yet to be written.

Play the cards that reflect the heroines' personalities and skills, and claim victory in every battle!

Your actions in battle add new cards to your hand.

Will you play your best move now, or save it for the battles ahead?

Every fight is a chance to build your deck!

Equip your characters with artifacts to compensate for their weaknesses or enhance their strengths — the choice is entirely in your hands!

Make your favorite heroine as powerful as possible!

You can also synthesize artifacts to create new ones that inherit the abilities you want!