The series 'Futa-bu!' centers around the insatiable Sumire, a horny futanari student who establishes the 'Futanari Club' with the sole purpose of sexually dominating her female classmates. The arc begins with her seducing the innocent and busty Ayaka, relentlessly pounding her tight holes with her thick, throbbing cock until she's a quivering, cream-filled mess. Soon, the club's activities escalate as more girls are lured into their depraved games. Each episode showcases brutal, passionate encounters where Sumire and other futanari members use their massive cocks to explore every orifice of their willing and unwilling participants. Scenes are filled with intense vaginal and anal penetration, deep throating, and copious amounts of cum plastering faces and filling wombs, leaving the girls completely broken and addicted to the pleasure only a futa-cock can provide. The entire series is a testament to raw, unadulterated futanari lust, culminating in massive orgies where every girl in school gets a taste of the club's special brand of pleasure.