[ The lust system was created by a supreme mage who was at end of his lifespan and couldn't progress further. This system gathers the elusive energy, that is created when both 'Yin' and 'Yang' merges, the Nascent energy, in form of Lust points. ]
[ As for why you have it, is because host was confidently found worthy. When the lust system came into being, it took form of energy and drifted around, searching for a person without any mana in their body and a strong soul. When the energy form of the system came into contact with host's abnormally strong soul and the other condition was also met, it merged with the host, granting host with the lust system. ]
The system explained. After Max heard the lust system's origin, he was flabbergasted. He then asked, "Is that supreme mage still alive? And what was his reason behind creating such system?"
[...]
