[Crossover] Grandpa's Cat Demon Soul Reaper

[Dark history, read at your own discretion] Miyamoto Keiko is a cat spirit. One day, she learns that she has a nephew named Miyamoto Takashi. In order to bring him back to the main family, she opens a space-time tunnel, gets "kidnapped" by the Fox Squire inside it, and becomes the Master of a citadel. As a European, she manages to forge Grandpa Mikazuki. While dragging the old man outside to have fun, she begins a life of being fussed over by Grandpa at every turn. This is an exceptionally capable old man, skilled both on the battlefield and in the kitchen. Keiko: Grandpa, I miss you so much~ Grandpa: Strange, why do I feel like I've forgotten something? Ah, my lord, don't run around! Hurry up and finish your vegetables! This story will be going premium on October 29, with over ten thousand words dropping that day. I hope all you lovely readers will continue supporting Xiao Lan. Love you all, mwah~ The heroine is a little girl with the ability to transform repeatedly without pause. This is a crossover story, and the heroine comes with a quick transmigration ability. Because of Xiao Lan's preferences, the plot won't stay fixed in the citadel, and will take place more often in other worlds. If you want a story that's entirely everyday life in the citadel, please move along. Note: This story has a happy ending. Grandpa is very much the doting, domestic type, and he may be somewhat out of character, so please be understanding. Theme: