Ahh. Well, I edited the post, and posted something new. This is the start of Hissatsu Techniques- special attacks that normally only your character can do. They're generally very powerful, so you can only have two. (It's best to name them if you so desire. If you can't think of anything, let me help- I'm great with names.)
Also, you noticed how Hikaru collapsed after using his Hissatsu too many times? That's the price of those powers- it drains your life force, making you lose the strength to fight. If he kept using his Hissatsu, he could've fainted or died.