17 years ago, immortals first appeared on the battlefields of Africa. Later, rare, unknown new immortal lifeforms began appearing among humans, and they became known as Ajin (demi-humans). Just before summer vacation, a Japanese high school student is instantly killed in a traffic accident on his way home from school. However, he is revived, and a price is placed on his head. Thus begins a boy's life on the run from all of humankind. Written by animenewsnetwork.com

Hotaru Tachibana, a female high school student, is often mistaken for a boy. She finds herself pretending to be a boy while playing Survival Games with Masamune Matsuoka, who is a host, and Tohru Yukimura, who is an ero-manga artist. Due to certain events, she cannot reveal that shes a girl. The story progresses as she learns to love the sport while battling with her fears of her closest friends finding out shes lying about her gender. This story begins very similarly to Ouran High School Host Club, but after the second or third episode it strays, becoming its own unique story.

Living her best single life, romance is the last thing on Anzu's mind — until a tiny match-making wizard suddenly turns her life into a clichéd romcom.