Basic move from jujitsu. he's got his hands on my chest, I'll just stick my hands through like so. Make him put his hands down. Immediately trap it, sit up into it.
Notice that I open my legs to stand up. My hand goes over his triceps here. I grab my wrist. Notice that I have five fingers on each side, like this and like that, and now I'm going to sit back.
I'm going to put this leg over his body. I'm going to hip escape as I drive this wrist towards the back of his neck. Make sure his arm is not straight. Clip it. Clip it. It's like a chicken wing they call it sometimes. Clip them here and drive. Drive this in the direction of that neck. Like that.
And that is your kimura lock.