@aquariumtourmaline It may very well be his name but...
shī xiōng
senior male fellow student or apprentice
son (older than oneself) of one's teacher
Maybe check facts before you call me completely incorrect. You see it more often in cultivation comics such as Xianxia, Xuanhuan, and Wuxia, where things take place in a much more pre-modern culture. You have masters and disciples and thus elder disciples are the shi xiong’s of younger disciples. I can’t say I blame you if you don’t read those, however, given they’re not exactly as romance/drama oriented as this is.