Moukaku holds a leadership position at Nanban Academy. Before the series begins, she and her sister Moyu launched a campaign to conquer the entire Kanto region. Their conquest was thwarted by the intervention of leaders from Nanyo, Seito, and Kyosho schools, forcing them to abandon their goal. At the start of Xtreme Xecutor, Moukaku strategically allies herself with Kentei, signaling a shift in her approach to the conflicts. Her attire is distinctive: a revealing outfit featuring yellow shorts, a sleeveless yellow jacket that exposes her bra, a yellow peak hat, and yellow boots. Moukaku exhibits a condescending personality, frequently punctuating her speech with the phrase "Dumb-ass" (馬鹿野郎, baka-yarō). Following their defeat, both sisters undergo significant personal growth and experience a profound change of heart. This leads them to re-evaluate their perspectives on life and competition, ultimately resulting in their departure from the series. In combat, Moukaku wields a modified Chinese ring weapon equipped with thorn-like ends. She effectively utilizes this ring for both close-quarters combat and as a throwing weapon.