Hareluya II Boy centers on Hareluya, a high school student who discovers he is the son of a god and a human. This revelation grants him supernatural abilities, including immense strength and the power to summon a magical staff. Despite his divine heritage, Hareluya prefers a carefree, delinquent lifestyle, often clashing with authority figures and rival gangs. His laid-back attitude contrasts with his sense of justice, as he frequently intervenes to protect his friends and those in need.

The story unfolds in a high school setting, blending comedy, action, and supernatural elements. Hareluya’s classmates, including his best friend Masaru and love interest Yuki, play significant roles in the narrative. Masaru, a loyal and street-smart companion, often aids Hareluya in battles, while Yuki provides emotional grounding and occasional romantic tension. The series also introduces a variety of antagonists, ranging from rival delinquents to supernatural entities, each challenging Hareluya’s abilities and resolve.

As the plot progresses, Hareluya’s divine lineage becomes a focal point, drawing the attention of other gods and mythical beings. These encounters reveal more about his heritage and the responsibilities that come with his powers. Despite the escalating stakes, the series maintains a lighthearted tone, with humor and absurd situations balancing the action-packed sequences. The narrative explores themes of friendship, loyalty, and self-discovery, as Hareluya navigates the complexities of his dual identity while striving to live life on his own terms.