Tasuke Shichiri is a 14-year-old junior high student living alone in a two-story house while his archaeologist father and older sister travel the world. His mother is absent but not deceased, fostering underlying loneliness beneath his self-sufficient exterior. Decisive and intelligent, he navigates chaotic circumstances triggered by magical artifacts from his father. The Shitenrin ring summons moon spirit Shaolin, bound to protect him. Though frustrated by her destructively overprotective nature, Tasuke develops unspoken romantic feelings for her, complicating their master-guardian dynamic. Further artifacts unleash spirits Ruuan, who strives to bring him happiness against Shaolin's objections, and Kiryuu, who imposes grueling training regimens that Tasuke eventually embraces with determined adaptability. Beyond spirits, Tasuke befriends classmates Takashi Nomura and Kouichirou Endou, who learn of his supernatural companions. Delinquent-turned-ally Shouko Yamanobe actively mediates his strained bond with Shaolin. Romantic tensions escalate with shrine keeper Izumo Miyauchi vying for Shaolin's affection and underclassman Kaori Aihara pursuing Tasuke after a simple umbrella loan. Throughout the OVA *Denshin Mamotte Shugogetten*, Tasuke deepens his self-awareness about loving Shaolin. He confronts challenges in their bond, including Shaolin's evolving grasp of human emotions and her choice to remain with him. His journey shifts from passive acceptance to proactive emotional engagement, reconciling feelings with supernatural and practical obstacles.