If Yuchi were a normal teenager, he might not understand what the other person meant, considering the words were so abrupt. But having lived a whole life before, many things just connect naturally.
Now, upon closely examining the hidden meaning in the other person's words, the Divine Soul and Physique can already be understood.
Using past life's comprehension to assist in judgment, the Physique is like the various hardware of computers and smartphones, while the Divine Soul is like the operating system. Only by integrating hardware and operating system does it become a usable machine.
If there's only Physique, it's like a computer having only hardware. The hardware might store data, which can be understood as memories. Without the activation of an operating system, pure hardware can't start, and over time, these data memories may be lost.
