Not to be confused with the Story Arc of the same name. If you were looking for the Arc, click here.
Serena and Leesoo pushing on the Shinsu barrier.
Lero-Ro's Test is a Second Floor test used by the examiner Lero-Ro to check passing Regulars' resistance to Shinsu. The test is simple enough: Lero-Ro flings a Shinsu barrier at the Regulars; those that get through the barrier, pass.