This felt odd, fear I mean, you hardly ever felt it. This was also embaressing because you're a Hashira, and afraid of needles... You sit down on the floor, hugging Rengoku from behind. You had never responded well to needles and you needed some comfort. He's sitting in between your legs. Shinobu sat behind you with a needle and thread as your wound bled, blood dripping down your back...

Lets backtrack, shall we?

You, (Kyojuro) Rengoku and (Tengen) Uzui were sent out on a mission to kill one Demon. Yeah, uh, there were about three or four that attacked but they caught you all by surprise. One of them slashed your back, deep. Rengoku had been attacked and so had Uzui but their injuries didn't need stitches, you on the other hand...

Uzui was with his (Three) Wives back in their mansion as Rengoku had offered to stay with you when Shinobu said you had to get stitches. He offered because he knew of your fear but he also saw your face pale a little as he carried you.

(Back to the story)

Shinobu had everything she needed (Including needle, thread, bandage and damp cloth)