[CausCiant (Yamaiso)] GyakuRa Sakudou (Touhou Project) [desudesu]

Sanae Kochiya and the crow tengu Aya Shameimaru drag one lucky man into a winner-takes-all competition where each wields her body as a weapon—Sanae's impossibly soft, oversized breasts versus Aya's aggressive stamina—to claim him first. The rivalry escalates through kisses, paizuri, and breathless turns as they demand he pick a favorite, with Aya offering to keep him as her personal sex slave while Sanae counters by proposing marriage. Neither shows any intention of losing, keeping him pinned between sweat-slicked bodies until the very last page.