Rukia feels that fighting with only brutal force might not be sufficient, and she decided to teach Ichigo some Kidō.
As the result, Ichigo successfully casted a newly learned Rikujōkōrō on Rukia. But due to his overwhelming Shinigami powers, he have casted three time in one shot. Instead of restraining at his target waist, the spells form at Rukia's wrists and ankles forcing her in a floating strappado position. The casted Bakudō was too powerful for Rukia or even Ichigo to break free with brutal force and to make the situation worst, Rukia did not know how to dispel it. Seems like she will be stuck until the spell wear off on itself and she can only hope that no one would enter Ichigo's room any time soon... 
Rukia Kuchiki belongs to Bleach.