Monster Strike Anime

Mana Livingston arrives in Japan from America and quickly becomes involved with Ren Homura and his friends. After receiving a Monster Strike ring and a partner of her own, she joins the group in investigating mysterious energy points that attract monsters into the human world.

Sealing those points should keep the creatures away, but the children's missions draw the attention of powerful adults, including the influential Madarame. As Mana learns to fight beside her new friends, the group begins to suspect that the crisis around the energy points is connected to a plan far larger than the explanation they were given.