Hi, Dragon! I'm LWP, FT's helper mod and the mun for the sole normal human in the game. Kotori is from Sweetness and Lightning, which is basically Chicken Soup for the Soul in that it's about Kotori, her teacher, and his preschool daughter learning how to cook together. And her essence is from a shorter and lesser-known Grimm tale called Sweet Porridge, so she more or less always carries a magical donabe pot with her.

Welcome to FT, take your time, and hope your mom gets well soon!