The energy disappeared and Rukia was left standing there, her arm outstretched. She gently lowered it and in a flash, she was standing beside Klaus. She had just used Shunpo, the art of flash step. Yet another Shinigami trick, and just the thing she had up her sleeve. Granted, she hadn't expected him to duck. But her Sōkatsui usually touched the ground...
"You're vulnerable" she said, her face straight. She held her hand out. "Hadō number 1. Shō" she said, just as a small pulse seemed to lunge out from her fingertips. It would at least have enough power to knock him back a few feet. Had it been someone lighter, it would have pushed them further.