Thanks for responding, I'm glad that you enjoyed the story. The OVA episode was just such a perfect set up I couldn't resist!

When Yumi dashed out of Sachiko's room, I was thinking, "No, stay!"

LOL, me too! When Sachiko started to lower those straps, I turned into Borat was like "Sexy time!" But then Yumi ran away. Silly Yumi. I guess Sachiko's just gonna have to keep on taking off her clothes in front of her until Yumi gets used to it ;D