Königin Shiina, first wife of König Bosse and biological mother of Prinz Bojji in the Bosse Kingdom, belonged to the giant race. Her traits included immense stature, formidable strength, and immunity to poison. She possessed long, curly black hair, with Bojji bearing a striking resemblance to her. Before queenship, her adventurer attire featured yellow leather armor over a brown fur shirt, red shorts, sandals, and metal forearm and shin bracers. As queen, she typically wore dresses but reverted to her adventurer gear during combat. Prior to marriage, Shiina thrived as an adventurer, traveling the countryside and likely undertaking quests for sustenance. She notably relished defeating male adventurers to prove her dominance, leading to her encounter with Bosse. Rather than engage her in battle, he proposed starting a family. The unexpected offer instantly captivated her. After a brief courtship, they conceived Bojji. Unaware of Bosse’s devil-forged pact transferring their firstborn’s vitality to himself, Shiina gave birth to an unusually small, weak giant child. She adored Bojji unconditionally and doted on him throughout his infancy. Her transition from adventurer to queen and mother was depicted in the spin-off *The Treasure Chest of Courage*, exploring her courtship and early family life through segments with a distinct papercraft aesthetic. Shiina perished defending Bojji during Miranjo’s initial coup against the kingdom, struck by massive arrows. With her final breaths, she pleaded for Bojji’s life and shielded him from the assault. Her death preceded the main series events. Consistent with giant physiology, Shiina could bear only one child in her lifetime, reinforcing Bosse’s conviction of their race’s extinction. Her legacy endured through Bojji, who inherited her kindness and resilience. Queen Hiling later reflected on Shiina’s motherhood when observing Bojji’s emotional vulnerability or fortitude. Shiina’s death profoundly influenced the kingdom’s history and the development of figures like Bosse and Hiling.