you and Shinobu are friends, although you aren't that close since she makes fun of Giyuu, your best friend, a lot. You never knew why she did it, but you did know one thing for sure. That all her softness, and kindness, it was all a mask. You knew she was hiding something, you just didn't know what.

after a Hashira meeting, you go up to her and ask her about it.

"Hm? Oh! Hello there, how can I help you?" she smiles softly