Labyrinth (KradLuz)

Luz and Kradness are friends since they met the first time on a tour. This meeting was already one year ago and now they are already like brothers. They often hang out and sometimes sing together, but something doesn't seem to be right. Kradness always gets the feeling that Luz hides something from him. Their best friends Urata and Sakata don't know anything about this. They both hang out together a lot in the last time and often went together to their concerts. More frequently the question what they are for each other comes to Sakata's mind. He doesn't really know himself how to answer this question and tries to find an answer. How will their relationship continue? What is Luz's secret?