In shark the ML gets revenge on his bully and is sent to prison where he gets mentored to learn how to fight. Both shark and weak hero 2 have the aspects of school fighting with both sharing a crazy villain character
Very similar concept, both dramas have an experienced idol manger who gets betrayed by the company they helped build. In entertainer the ML makes a band whilst the FL in Namib has only one individual talent so far. The ML in entertainer also has a romantic interest (the manager of the new group he's making). Both the leads mentor a struggling young trainee into becoming a star, the entertainer also has a lot more bromance
