Summary
As the instructor for the Light Bearer position, Lero-Ro serves as the Examiner on the Second Floor. He is an elderly figure, significantly older than Yuri Zahard, with whom he previously shared the status of Regulars. Yu Han Sung oddly refers to him and Quant as a "Set Menu." His reputation is substantial enough that his profile is accessible on the network utilized by Light Bearers, and it took him more than three centuries to ascend the Tower.
