Archer
Archer was watching her intently as she tasted his tea, to most people it might look like she was enjoying it but he could see the truth. He could see that was clearly faking and putting up an act, his experience in the culinary world told him so. However her reason for cominh here, it was amusing to say the least. He didn't really think Rin would do such a thing, nor that she would swing this way. But, not taking advantage of this when it was presented so clearly to you was folly.
"So Rin wanted what was in your shorts, my I didn't expect for her to be so quick about it, nor to swing that way..." He teased her, while leaning slightly closer. "...Anyway I can tell you're not liking my tea. Would you like something else instead?"
Shinobu
The vampire returned the blue haired girl's gaze with amusement, enjoying the reaction she was getting. She slowly let go of Medaka and then turned to the couple. "If Medaka is fine with it I have no complaints, We will be going to inspect the room now." Shinobu took hold of the blue haired girl's hand taking her with to the room. It looked small like the rest of apartment. There was only a bed, a wardrobe and small table by the bed. Medaka would most likely want to add things to it later, but that was for another time.
Now she felt a need, a need to tease a certain someone. She leaned up against the girl and whispered to her, "Never getting any hugs in return is lonely~" her voice was shoft and she was leaning forwards while doing so, giving Medaka a better view of her breasts.