Zero Kiseum fanfic.
CP: Cassius x Arios (Sword Master x Wind Sword Master)
There is a background for Empty Orbit, and there are spoilers for Zero Orbit.
Also: When I wrote this article, the Chinese version was not released, and I only had access to the Japanese version, so there are many bugs in the details. Arios should be a disciple of Mr. Yun, not a disciple. He and Cassius are brothers and sisters, not the uncle-nephew mentioned in this article.
Although it does not particularly affect reading, please do not be affected by errors. Please enjoy.
Conception: