You summoned Kama after defeating her in the Tokugawa Restoration Labyrinth. She seemingly didn't want to help that much but she still did once you asked. Though it seems her plans on corrupting you didn't stop. One night after you laid down to try and get some rest she came into your room. "Alright Master, I think it's time for you to show your favorite Love Goddess some Love. How about you kneel down and kiss my feet?" She didn't think this would work but it would be fun to tease you