> read the rules. 
You should have two strengths, one containing your characters strengths, the other... The "secret" word.

SHSL = Super Highschool Level 
Every character in Dangan has an ability that they're the best at, a talent, if you will.
But this term can also be said as ultimate which I like to say, cuz, its easier, lol.
It can range from the ultimate pop sensation, to the ultimate baseball star.