Play あいりすミスティリア！～少女のつむぐ夢の秘跡～ on PC Play あいりすミスティリア！～少女のつむぐ夢の秘跡～ on PC and Mac

About the Game

Airis Mysteria! brings together two names well known in the Japanese bishoujo game space: DMM GAMES as developer and operator, and AUGUST as the creative studio responsible for the game's world, characters, and story. AUGUST has built a strong reputation through titles like Thousand Blades and Shepherd of the Great Library, and their full involvement in Airis Mysteria! means the game carries the same level of artistic and narrative commitment fans have come to expect from the brand.
At its core, Airis Mysteria! is a school-themed RPG centered on a group of girls known as Irises. The cast exceeds 30 characters, each designed with a distinct personality and visual identity. Character design and original illustrations were handled by Bekkanko, Io Natsuno, and Kusunoki Kusunoki, with additional illustration support from Hiro Atobe. The music was composed by ActivePlanets, and the background art, CG coloring, and decorative illustrations were produced by a dedicated team of artists. Every major character is fully voiced, with a cast that includes Riri Kiriki, Sawa Sawa, Yuka Kotorii, Ion Momoyama, Miwa Hanayasu, and many others.
The story is one of the most ambitious aspects of the game. Written entirely by AUGUST's scenario team, which includes Taku Sakakibara, Hiroyuki Uchida, Hideaki Anzai, and Koichi Kagamiya among others, the total narrative volume is comparable to more than 20 light novels. This is not a thin framing story designed to connect battle stages. It is a fully realized script that gives each Iris her own character arc while also weaving in group storylines that show how the characters interact and grow together. Players who enjoy reading and connecting with characters will find this a particularly rewarding experience.
Here is a summary of what the gameplay offers:
A training and development system where each Iris can be raised and customized over time
Holy Dress equipment of multiple rarity levels that unlock character-specific skills and passive abilities
Party building based on combining different characters, outfit sets, and skill configurations to counter various enemies
An idle progression system that allows the game to continue advancing even when the player is not actively engaged
Individual character story scenarios as well as multi-character interaction storylines
Full voice acting throughout the entire main and character-specific narrative content
The idle RPG structure makes Airis Mysteria! accessible to players with varying amounts of time to invest. Progress accumulates passively, and the game does not demand constant active input to advance. At the same time, players who want to engage more deeply with party optimization and combat strategy will find enough depth in the Holy Dress system and skill combinations to keep things interesting.
For players who have previously enjoyed titles from AUGUST or DMM GAMES, Airis Mysteria! represents a continuation of that creative lineage in mobile game form. For newcomers, it serves as a polished introduction to both brands through a format that balances story-driven content with approachable RPG mechanics. Whether the appeal is the artwork, the voice acting, the extensive scenario, or simply raising a team of memorable characters, the game offers multiple entry points and a long content runway to keep players engaged.