The animation by studio ufotable is arguably the best in the industry, and the story is a classic tale of sibling bonds. Jujutsu Kaisen

A spy, an assassin, and a telepathic child all pretend to be a normal family for their own secret reasons. None of them (except the kid) know each other’s secrets.

Humanity lives inside walled cities to hide from giant man-eating Titans. When the walls are breached, the world turns into a brutal mystery.