[Dakkoku Jiro] Najimi no Tabishounin

A cash-strapped hero traveling with his futanari succubus ally meets a shameless, busty traveling merchant who boasts she'll sell about anything — including a ring whose power increases according to sexual desire. The teasing, big-breasted dickgirl quickly turns her attention to the hero himself, unveiling her massive, veiny cock and dragging the flustered adventurer into relentless anal submission where his tight ass is stretched, pounded, and milked for helpless, feminizing orgasms. As she bullies him to forget his companion and admit how good her thick cock feels inside him, the hero is left trembling, leaking, and unable to stand — until the merchant cheerfully offers to join his team for good.