"Senior brother, you are so handsome, so smart, so capable. You dance well with a sword, play the piano well, cook well, and do well. Dressed in white, you are as gentle as jade. Senior brother, you are my idol. I love you so much!"
"Yeah, but you still have to wash the dishes."
"Senior brother..."
"After washing, go and boil the water. Don't waste time."
"..."
Well, this is probably a more complicated story than a story about a girl who lost her memory and was picked up as a junior sister and then raised as a younger sister.