Eirune: Side Story

Eirune: Side Story is a short visual novel set in the world of Hearts of the Firmament. It presents an intimate conversation between the player and Eirune, the first Luminary—a celestial heroine—during a quiet night at an inn as she experiences human life for the first time. The game focuses on atmospheric storytelling and hand-drawn artwork. Though playable standalone, it is designed as a companion piece to the main gacha-inspired visual novel, which introduces celestial characters through summoning mechanics.