On the way back, a noise.

As you make your way to the elevator you hear a strange noise from a direction you're pretty sure Liara's cabin is in. Out of both curiosity and concern you walk over to check out the noise. When you get close to the door the noise becomes recognizable as moans and groans with some yelps mixed in. You don't recognize the voice but that could be because it's moaning and groaning instead of talking. Even though you don't think there is cause for concern anymore as the sounds you hear now are ones of pleasure, curiosity gets the best of you and you try to peek inside Liara's cabin. The door is semitransparent but only enough to see that the people on the bed are both female, not enough to see who they are.

You decide they are too caught up in the sex to notice the door so you quickly open the door and hide in the room. From the hiding spot you found you can get a pretty good look at the lovers on the bed and they can only see you if they look in the mirror in the right angle. Not that you worry about this as you are way too stunned by what you see to worry about anything.

On the bed are a naked Liara on her back and sitting on top of her face, moaning groaning and giving the eventual yelp as her ass is slapped, is doctor Karin Chakwas. She may be in her fifties but the only parts of her body that look over thirty is her grey hair and the few wrinkles on her otherwise beautiful face. And fifty isn't middle-aged anymore now that most humans live to 150 years, which is nothing to the Asari who live to over a millennium. Not that the lifespan of the beautiful women on the bed before you is of concern to you, the only thing on your mind now is how hot they look on top of each other. As you slip a hand into your panties and start to play with yourself Chakwas leans down into a sixty-nine position and starts to repay the favor to Liara.