Yahiko Totsuka

In a world where Essence — a mystical energy — governs the balance between realities, the Guardians of the Veil wage a secret war against the Yokaï, nightmarish creatures capable of plunging humanity into chaos. Yahiko, a thirteen-year-old boy, lives peacefully in a remote village alongside his mother and sister. But when a Yokaï emerges from the shadows and ravages his home, everything changes. The attack awakens in him an unsuspected strength, a mix of anger, pain... and a strange power tied to Essence. Determined to understand this gift and rise again, Yahiko leaves his village to join the Sanctuary, the school of the Guardians. There, he meets Rin, a lively and curious girl driven by a thirst for freedom, and Eiji, a taciturn young prodigy haunted by a tragic past. Together, they face ruthless trials, battle Yokaï, and discover that their world is far more complex — and dangerous — than they ever imagined. Between revelations, sacrifice, and newfound friendships, their initiatory journey will transform them forever. But as Yahiko begins to uncover the true extent of his power, one question arises: what if this unstable force, buried deep within him, was not just a gift… but the hidden key to a war capable of shattering the balance of the worlds?

Di dunia di mana Sistem Fundamental membagikan kekuatan para dewa kepada individu terpilih, terdapat aturan unik: satu sistem hanya memberikan satu kekuatan dewa kepada satu orang. Kekuatan ini tidak bisa dibagikan atau dipindahkan. Ketika seseorang dipilih oleh sistem tertentu, ia akan menjadi satu-satunya pewaris kekuatan dewa tersebut di dunia. Ryu Arata, seorang remaja yang sekarat di tengah badai malam dan hampir mati tenggelam, mendapatkan Sistem Susanoo, memberinya kekuatan badai dan pedang legendaris Totsuka-no-Tsurugi. Tanpa sepengetahuannya, teman masa kecilnya, Hiroshi Kurokawa, juga terpilih oleh Sistem Tsukoyomi, dengan kemampuan untuk mengendalikan malam, ilusi, dan Mangetsu Yari (Tombak Bulan Purnama). Namun, mereka bukan satu-satunya yang terpilih. Di seluruh dunia, Sistem Fundamental terus memilih penerus dewa-dewa lain, menciptakan persaingan sengit antara para pemegang sistem, baik untuk mendapatkan dominasi maupun untuk melindungi keseimbangan dunia.

The -majority of- events take place in the world of "Avatar the last airbender" where Jiraiya, Nagato, Yahiko and Konan get reborn after their death in "Naruto Shippuden". After the Avatar vanished, they have to maintain the balance of this world in order to avoid that the world is swallowed by war. Can the four shinobi stop the Fire Nation from their attempt to rule over the world?