先せん輩ぱい後こう輩はいMeaningsExpression1. one's seniors and juniors2. seniority-based hierarchyKanji used先before (timewise)輩comrade後afterComposed of先せん輩ぱいsenior (at school, work, etc.); superior; elder; older person; predecessorNoun後こう輩はいjunior (at work, school, etc.); younger people; younger studentNoun