Horo-Beat

The "thrilling tag-team battle" manga features youkai and humans teaming up together. The story centers on Jin Narumi, a second-year middle school student who can see monsters, youkai, devils, and ghosts. He visits his friend Hinata, who lives at a temple, every morning, as Hinata's temple is overrun by these creatures. However, Hinata cannot see them, and so she does not take Jin's worries seriously. One day, Jin and Hinata are attacked by a giant youkai. When Hinata is knocked unconscious and Jin is on the verge of death, Hinata's temple cat Leo appears and turns into a raijuu beast. Together, Jin and Leo team up to take down the giant youkai and save Hinata.

(Source: Anime News Network, edited)