Chasing his young sister, Eliade accidentally breaks into a laboratory in a secret base. Surrounded by many instruments, a young man with pale silver hair lay there alone, as if waiting to meet him... "We made an appointment to see the real blue sky together. So, I will definitely come back." This is a story about the pursuit of the real blue sky and the freedom that belongs to two people. Serious fantasy battle setting, dark and heavy style, character story unfolds like a family. The main plot is two good gay friends, and many characters unfold like a big family, some are cute and some are sadistic... The prologue begins with a story about the past when the two met, and briefly touches on some concepts of the worldview, which will be explained in detail in this article. This chapter begins four years after the end of the prologue.