Three years ago, a gateway between Earth and the Beyond opened in New York City, trapping extradimensional creatures and humans alike in an impermeable bubble. After the city's restoration, monsters, magic, and madness are common findings in the area now known as Hellsalem's Lot. Leonardo Watch, a young photographer who unwillingly obtained the All-seeing Eyes of the Gods in exchange for his sister's eyesight, came to this paranormal city to find answers to the mysterious power that he possesses. He later finds his life drastically changed when he joins Libra, a secret organization of people with supernatural abilities dedicated to maintaining order in the everyday chaos of Hellsalem's Lot. However, this is only the beginning of Leonardo's unexpected journey ahead. Regardless of the constant threat of otherworldly enemies, he is determined to uncover the secrets of his power and find a way to restore his sister's eyesight. Kekkai Sensen & Beyond follows Leonardo as he sets off on more crazy adventures with his comrades, fighting to ensure peace and order.

Japan's latest competitive sport, keijo, is dictated by a simple set of rules: female-only participants must stand on circular platforms floating in a pool—referred to as lands—with the goal being to knocking off opponents using only their breasts and butts. Despite this outlandish premise, the sport attracts millions of viewers across the country and boasts a lavish prize pool. Many aspiring athletes take up the challenge in hopes of becoming the next national champion. After graduating from high school, the lively 17-year-old Nozomi Kaminashi enters the world of keijo, hoping to bring home a fortune to her poor family. As a gifted gymnast, Nozomi quickly proves herself a tough competitor after stealing the spotlight in her debut tournament. Meeting new friends and rivals as she climbs the ranks, Nozomi discovers that the path to stardom as a keijo player is filled with intense competition that will challenge not only her body, but also her soul.

Years ago, astronaut Byakuya left behind precious materials in the belief that his son, the scientifically-gifted Senkuu, would one day find them. In the present, the Kingdom of Science's Kohaku and Ginrou have infiltrated the harem of the Petrification Kingdom’s leader with the help of Amaryllis, a local girl. At first, their mission progresses without a hitch. Unfortunately, an error enacted by Kohaku and Ginrou leads Minister Ibara and the Island’s strongest warrior, Moz, to identify the intruding duo as enemies. Even worse, Moz tails Amaryllis when she returns to inform Senkuu of the news, discovering the scientist's secret hideout. However, Moz's agenda does not align with Ibara's—he wants to dethrone the minister and keep the petrification device for himself. If Senkuu plays his cards right, he could gain a powerful ally and win the war once and for all.

A battle is about to begin in Tokyo: the Shaman Fight, a tournament held every five hundred years where shaman—those who can command spirits—confront each other in combat. The victor of this contest becomes the Shaman King and the only one who is able to contact and control the Great Spirit, allowing them to reshape the world as they please through its immense power. During a late night walk, Manta Oyamada runs into his classmate, the carefree You Asakura, who invites him to come stargazing with some friends, who, to Manta's horror, turn out to be ghosts from a local cemetery! However, the knowledge that Manta possesses—a rare sixth sense that allows Manta to see these spirits—endears the boy to You. So when You finds out that his new comrade has been beaten up by a local gang, he decides to avenge him with the help of Amidamaru, a samurai ghost whose tomb was broken by the gang leader. Soon Manta uncovers more about the world of spirits, including the Shaman Fight, in which his new friend You aims to claim victory.