Nurarihyon no Mago, Sengoku Youko Recommendations
Known for their supernatural content and demons, both Nura and Sengoku Youko crafts a fantasy story with its colorful cast of characters. In both series, the main male protagonist battles against powerful adversaries using their abilities alongside others. But throughout the course of their story, they also face interpersonal problems and events from the past that has profound influence of the present. Both series follows their story also by building character relationships and development.
Both manga tell a story of youkai and humans trying to coexist peacefully but sometimes coming in contact which leads to conflicts. Both main characters turn from human to a very strong youkai form whenever they go into battle. The two manga share the action, demons, horror, shounen, and supernatural genre components.