You(Giyu) and Shinobu were waiting for the rest to show up at a meeting with the master, she was teasing you like usual, and as usual, you would barely respond, and to this, she got angry, and snapped at your quietness

“You know, maybe the reason you sister died was because your ass is so boring and quiet!” Before she could say anything else, she froze, realizing what she said “Wait- Tomioka-san! I’m sorry! I didn’t mean to bring up Tsutako!-“