Sei adds, increasing the pressure on Yumi's crotch. Yumi tightens her grip in Sei's hair unbidden, and bites Sei's shoulder to keep herself quiet. This causes Sei to surge against her, letting go of Yumi's groin in order to use both of her hands to pull up Yumi's skirt, driving them in earnest toward the bed. Yumi feels the edge of her bed bump against the back of her knees, and gives up. She wants this too badly, so badly wants the feel of Sei loving her. Smiling to herself, taking her teeth off Sei's shoulder, despite everything, her craving for this does not appear to abate. She falls back on the bed, pulling Sei on top of her, gasping into Sei's mouth which is back on hers, when she feels the familiar weight of Sei on her again.