That happened more than ten years ago.
At the time, Luo Zhen was not even five years old. Yet because he had demonstrated extraordinary learning ability, Natsuki, who was still in high school then, took a great interest in him. She decided that she had to properly raise her younger brother no matter what and turn him into an excellent man.
Thus, Natsuki had already written down everything she knew about the Space Control Magecraft she excelled in, adding her own insights and experiences before handing it to Luo Zhen for self-study.
Thanks to that, although Luo Zhen was nothing more than a chubby little brat at the time, he carried around an incredibly profound magecraft book all day long. Wherever he went, he took it with him, and whenever he had the chance, he opened it and read it carefully, committing every spell formula recorded inside to memory.
Since Natsuki had not yet graduated from high school and was not yet the famous Demon Slayer, Luo Zhen and Natsuki had naturally not moved into the top floor of an upscale residential complex. They merely lived in an apartment in the southern district.
Moreover, because Natsuki had to attend school, obtain her official Demon Slayer license, and work to support the family, Luo Zhen was often home alone.
Luo Zhen's favorite thing to do was sit on the balcony of the apartment's top floor and read magecraft books on a bench, studying spatial magecraft, which ranked among the highest levels of all magecraft.
He met "that person" one day while repeating this routine day after day.
That day, Luo Zhen was sitting as usual on the balcony bench, reading a book on Space Control Magecraft.
Then, the other party appeared.
"Do you like magecraft very much?"
It was a beautiful