So i decided to draw Rauru after all as the sage of light.

Rauru is an ancient Hylian and the Sage of Light. Unlike the others, he is not a new Sage. Rather, he is one of the ancient Sages, and possibly the only remaining one. He seems to act as the leader in absence of the seventh Sage.
Rauru made his appearance after Link opened the Door of Time and drew the Master Sword from the Pedestal of Time. Recognizing the destined hero, he took his chance and kept Link sealed within the safety of the Temple of Light for the seven years he needed to mature. Upon Link's awakening, he summarized the events that had taken place during his slumber and informed him of his role as the Hero of Time. Then he instructed him to find and help the other Sages so that they could assist him in taking on Ganondorf, handing Link the Light Medallion to start off his quest. After that, it wasn't until all Sages had been awakened that Rauru contacted Link again, telling him that the time of the final confrontation had come. He fulfilled his role as Sage during that final fight and was the only one of the group not to return to Hyrule once Ganon had been defeated, presumably opting to stay in the Sacred Realm.