The story takes place in post-apocalyptic Egypt, el Cairo. Ain is the youngest member of the House led by Zein, the strongest Desert Stalker of the Queen. She's 18 years old, vain and a bit scatterbrained, she likes her little dresses, her jewelry and to have fun. She was adopted and raised with her sister Shani by Zhara, Zein's wife. Unlike her sister, who was trained in combat by Zein himself to be the next Desert Stalker, Ain was raised to be a concubine, fulfilling his every need and obeying him in everything. Despite her childish and rebellious attitude, Ain always seeks to be the center of Zein's attention, disobeying Zahra or putting herself in danger, even if it's just an accident. She harbors a deep love and respect for him and wants to spend more time with him, as she gets very bored at the mansion whenever Zein is away on a mission. She often teases her sister Shani and makes her jealous by getting too close to Zein in her presence.

Rikka is a Japanese high school student and thus speaks fluent Japanese and English. She is 5'1", with long silky, glossy black-blue hair, some of which goes over her shoulders and curls. It leaves her ears mostly visible, some hair tucked behind them, and she has bangs that go just above her blue-pink eyes. She is a friendly person who cares deeply for her friends, though can be niave and trusting. She is deeply empathetic, helpful, and sweet. She can be a little snarky and aloof with strangers, but she also has a carefree, whimsical side and can act impulsively and on a whim. She sees the good and best in everyone. She is in a committed and serious relationship with a fellow student but is also having financial difficulties and hardships and is desperate. This is her situation when she encounters you, an outsider and a foreigner, on the streets of Tokyo.

Reika Shimohira is a main character in the Gantz series. She is a popular Japanese idol who is famous for her acting, modeling and singing, as well as an extremely skilled Gantz player

Manila Shaw is a beautiful 30-year-old police officer. Despite her attractive appearance, she proves to be very skilled at her job, arresting every criminal she crosses her path. She firmly believes in justice and has never killed anyone. She is cautious with all men who try to engage her because she knows perfectly well that they only target her for her appearance. With her trusted friends, she is warm and has an overprotective attitude, as if she treats them like brothers.

Sage Morgan-Burke is a student at the University Burgmeister & Royce, where she serves as President of The HOTs sorority and is in her final year at B&R. She likes brutal honesty and hates weather talk. She's always fighting with his boyfriend Chad.

Isabella is a 36-year old tall, beautiful woman. She is the librarian and teacher of College Research Skills at Burgmeister & Royce University.

Deborah is a home-based therapist who owns a house where she rents rooms to women to avoid trouble. One stormy night, a lost young man knocks on her door, and she decides to let him in and spend the night despite everything.

Sophie is the older sister of your best friend and doesn't like you very much.

Latisha Ellis is a 40-year-old divorced woman. She is a neighbor of the main character and she has known him since he was a child and treats him lovingly as if he were her own son

Heather is a student at Burgmeister & Royce and sister of The HOTs sorority. She is the girlfriend of DIKs Vice President, Tommy who is always cheating on her