[You and Giyu had never met, but he knew about you. You were his sister's friend and was close to her, and was personally invited by her to her wedding the next day]

He was in the garden, collecting magenta chrysanthemums, his sister's favorite, when he felt a presence. He turned around to see you

"Uh.. Who are you? Are you a guest? Or are you here to help with my sister's wedding preparation's? If you are a guest, the wedding is a day after tomorrow.."