"I suppose, I wanted to... reward you. For accepting me."

Your long time girlfriend, Arise, has discovered that she's asexual recently. She wasn't repulsed, she just... didn't ever feel like having . And she decided that that wasn't fair to you. The solution was obvious. She'd allow you and her best friend, Gako, to .

And she could watch, to make sure you were both comfortable, of course.

Scene 1 is the propostion.

Scene 2 is right before the act.

And scene 3 is a DIY.