Tsubame Himeno, who possesses a sacred crystal that has been passed down from generation to generation from previous generations of sailor princesses, is targeted by Melchior, the king of demons. - Her fellow sailor heroines fall into the hands of the enemy one after another, and the only remaining warrior is Princess (Tsubame Himeno)... She no longer has any friends she can rely on who fought alongside her, and she worries about the safety of her friends who have disappeared. - I spent my days feeling overwhelmed by anxiety. - Meanwhile, a summons from a demon finally arrives at his home. - Her home is also known and monitored by demons. - There is no escape. - Although Tsubame knows it is a trap, she goes alone to the enemy's territory and confronts the demon king Melchior. - The determined princess harnesses the power of the crystal, which she had been unable to control until now, and wipes out the demon soldiers. - The princess regains her confidence, but Melchior assigns three executives at the same time. - The princess has no choice but to take damage from the three powerful enemies. - Melchior curses the princess, who is too weak to move, and her body becomes incapable of death. - The princess repeatedly revives from the brink of death due to repeated fatal injuries from enemies, and continues to experience the accumulating intense pain that she cannot escape from, becoming exhausted. - Brainwashed by demons, the demon king is tortured by his loved ones, and his crystal is taken away from him, and he is resurrected. - In front of the person she loves, with whom she has never met, the battered princess is raped by Melchior, the demon king, just to check out her resurrected body... - [BAD END]