When Kuro grabbed her hand she smiled, attempting to pull him up on his feet, but she was not aware of his evil masterplan. As soon as she started pulling him up he only pretended to play along before he slipped and fell down. Unfortunately, force of gravity+Kuro's weight+Saki's grip=... ummmm, people can picture that, right?
Anyway, as soon as Kuro "slipped" and fell, pulling Saki after him, she meeped lightly as she lost her footing and fell over Kuro, closing her eyes before impact. Ok, she actually expected to magically fall next to him, not on him, so when she landed on him she took a a moment she get back to her senses and heard Kuro speak. Even his words and emphasis of a certain one made her question what happened, but she had to check to make sure. Opening her eyes, she slightly lifted her head to be able to see Kuro... only blushing when she saw his smile.
"He... planned this, didn't he?" she tought as she looked at his smug smile, then she half lifted her hand in a wave as she was still blushing.
"Y-yo..." she said, trying to sound casual