Experimenting with mutations, she took her brother to an unknown era. In this ancient time and space, she possesses talent and knowledge and demonstrates her outstanding abilities time and time again.
Attach advanced knowledge to life and dedicate world-renowned achievements to suffering.
Brother: "Sister, I don't understand much of what you know, but please leave the trivial matters to me."
Male protagonist: "I am willing to be your helper, as long as you agree."
Intent: Relaxed and cool writing