Taking place after the events of the fourth film, the series centers on 11 yr old Keisuke Amano, Natsume's younger brother (both of whom are the children of Keita Amano and Fumika Kodama of the original Youkai Watch anime) who doesn't believe in any supernatural phenomenon around him. But as he notices his sister is frequently comes back home late, he decided to stalk her, only to find out she is doing her duties exorcising evil Youkai alongside her friends Touma and Akinori, and running a Yo-Kai detective agency. With their secret revealed to him, Natsume decided to let him tag along in her activities as they investigate Youkai crimes and take on evil Youkai to maintain peace all over the city. (Source: Wiki)

Keishuu, China. The history books say that in the era of the Three Kingdoms, this land was a place of never-ending war. A young high school boy, Sonshin, who hates his city's history, is troubled by a certain dream. When he wakes up from the dream, strange things begin to happen one after another, and without understanding what's going on, he suddenly finds himself facing Gien, one of the generals from the Romance of the Three Kingdoms, who's trying to kill him! Just before Gien's blade strikes home, a mysterious beautiful woman appears in front of Sonshin. What trials await Sonshin, as he witnesses this terrible battle between two generals of the Three Kingdoms? (Source: Crunchyroll)

In the Underworld, during the fight against Hades, the 12 Gold Saints gave up their lives to destroy the Wailing Wall and allow Seiya and his friends to keep moving forward. Aioria and the Gold Saints, who should have disappeared, come back to life in this beautiful Earth full of light. How have they resurrected if they were supposed to be dead? While the big mystery remains, Aioria gets involved in a new battle and when his Cosmo exceeds its limits.. a change happens to the Leo Cloth! (Source: AniChart/AniList)

Ninja... Ninja were... merciless demi-gods, ruling Japan with their karate in the age of ninja tranquillity. But, "some" committed a forbidden form of hara-kiri storing their souls at Kinkaku Temple for future resurrection. Their lost history was falsified and concealed and the truth about these ninja was long forgotten. Now, in the future where the universalization of cybernetic technology and electronic networks are God, suddenly, sinister ninja souls, resurrected from thousands of years past are unleashed on the dark shadows of Neo-Saitama. Fujikido Kenji, is a salaryman whose wife and child were killed in a ninja turf war. In a brush with his own death, Fujikido is possessed by an enigmatic ninja soul. Fujikido cheats death and becomes Ninja Slayer. A Grim Reaper destined to kill evil ninja, committed to a personal war of vengeance. Set in the dystopian underworld of Neo-Saitama, Ninja Slayer takes on Soukai Syndicate ninjas in mortal combat.