Its not called legendary super saiyan and just cuz its called that in the games and videos on youtube doesnt mean that ita legit. The legendary ssj is Goku. Not mad at the one who made the video but kinda nnoyed the games and people who call broly and his form the lssj cuz no its Goku that is the lssj
In the Z version of broly it's called the legendary super saiyan, but in the super version of broly it's called C type super saiyan and then full power super saiyan
you need 2 friends for this,one friend should kill ur friend with death beam,then U just have to look at it friend is dying then this lssj automatically activates.