Wrath of the Goddess

[Story]
When Hades, the Lord of the Underworld, goes missing along with his wife, Persephone, the shades of the dead invade the world of the living and cause terrible suffering until the daughters of Hades step up to stop them in an attempt to restore their father to his dark throne.
[Character]
MC A
She is a college student. She studies history, and she is particularly interested in Ancient Greek history and culture. She feels like she can’t fit in – she is considered a “nerd” and her interests are mocked. Secretly, she dreams about the age of gods and monsters, and wishes that just once, she could be a heroine.
MC B
She is a complete opposite of her sister. Also a college student, she is a member of a sorority, and she’s a great athlete. Somehow, anything she does is successful, and she enjoys great popularity. She doesn’t care much about the pursuit of knowledge, but she enjoys displaying her athleticism, which often makes men envious, so they try to dominate her. She is called Theo in the Solo Scenario.
MC A and MC B have very different personalities, but they’re everything each other has – they both feel like no one else in the world would understand them. However, MC B has no understanding for MC A’s academic interests, and MC A cannot fathom why MC B would be interested in sororities and parties. MC A feels incredibly lonely, while MC B buries her lack of understanding of herself into going out and having fun. Over time, MC A will help MC B understand herself and what her body is making her do (being an immortal demigoddess), while MC B will help MC A come out of her shell and inspire her with courage to become a fighter.
Hermes: Hermes is a god in the Ancient Greek pantheon. In this story, Hermes is a college-age young man with mahogany-red hair and bright eyes. He dresses like the modern youth, and carries a distinct symbol of wings somewhere on his clothes. He was sent to Earth by Zeus to find Cerberus and make him go back to guarding the gates of Hades. As a Messenger to Hades, his role is to reveal the truth of their heritage to the MCs, as well as guide them to the gates of Hades. He is a romanceable character. He has the power to bring sleep to any mortal, and he is also very clumsy, so he loses his sword, which the MCs later use.
Cerberus: Cerberus is the three-headed guardian dog of Hades. Cerberus suddenly found himself cast out from Hades. Having been transformed into a human, but reserving his ability to shapeshift into a black dog, he tries to find a way to return to Hades, and he looks for someone to blame for the disappearance of his masters. In the Group Scenario, he appears as an antagonist and someone who hunts the MCs. In reality, every time he showed up, he was just trying to protect the MCs from the Erinyes, the spirits of vengeance sent to hunt them. He has black hair and red eyes, and his disposition is dark and threatening.
Prometheus: Prometheus is a Titan whose name means Forethought, and he is the protector of humankind. He appears in the story as a substitute professor at the MCs college. His goal is to save humanity from the shades of the dead. He has a kind face, with light hair and eyes, and his main characteristics are maturity and wisdom. He is a Mentor character. Before his identity is revealed, he will be referred to as the Professor. He is a hidden romance character for the Solo scenario.