Shadow palace:Eminence of dark knight

Kirito Kaizawa, learns he is destined to become the next Eminence in Shadow, inheriting ancient power. His life shatters when the entity Sol Invictus possesses his father, causing a massacre that leaves him and his sister Allya alone. Recruited by Sam into the Dark Knights, Kirito joins Team 7 and begins training while balancing school and missions. As he grows stronger, he uncovers a conspiracy involving child experiments, spirit possession, and a hidden organization. A rescued boy, Rin, reveals overwhelming elemental power, raising dangerous questions. Kirito must protect his sister, uncover the truth, and face a hidden enemy.