Kyuuketsu Hime Yui Senyasyo is a visual novel adaptation of the Vampire Princess Yui manga. Play through branching routes with four main heroines (two initially available), manage a life bar affected by your choices, and unlock multiple endings and gallery images as the story unfolds. You follow Yui, a half‑vampire, half‑Shi girl with a tragic past, and her protector Nagi as factions hunt and shelter her; narrative choices determine relationships, survival, and which endings you reach.