If you're looking for anime similar to Durarara!! X2 The Third Arc: Dufufufu!, you might like these titles.
Kuraki has taken his grandfather’s ancient sword to the Shinnagi festival for an ancient cleansing ritual, and finds himself inexplicably drawn to a beautiful shrine maiden. As night falls, the priestess is revealed to be Nanachi, the son of the guesthouse Kuraki is staying in. The bond between the two is strengthened as they discover they share the ability to see spirits and use the ancient Japanese magic of Izumo. However, on the night of Nanachi’s initiation as a shaman, Kuraki accidentally sees a ritual sacrifice that is an attempt to break the curse of Susanoo, and becomes the target of the newly instituted and blood-thirsty leader...
One day, when they were children, Maya and Ami were out playing in the summer sun and happened upon a mysterious and legendary creature known as a Tsuchinoko. Lovingly naming it Tsucchi, the pair decides to keep it as a pet. Now the two girls must train themselves to avoid Tsucchi’s attacks, try to find out what it likes to eat, and attempt to find a partner for their beloved new pet.
There's an old decrepit building at the edge of the school grounds that hasn't been used for years, and it falls apart a little bit more each day. But the little house holds a secret, as Takahiro and his friends are soon to find out when they wind up making contact with a mysterious entity known as Saki. Can Takahiro save Saki's world from destruction?