User blog comment:Eeepzlala/Urgent SBB levelling/@comment-63.233.151.162-20140913042100

i would advise against using your burstfrogs until the end. say if you have 3 frogs, get ur bb to 7 then use the frogs to get to 10. it gets less and less chance of an increase in bb the higher up you go.

the easiest way to identify if you will have a chance at getting a burst level up from a fusion is by loading up the character you want to level their bb, then when you go to select the guys you will be fusing into your main one they will have a "bb up?!" flashing on the ones that will have a chance at leveling your bb. dont forget that each guy you fuse has a chance to raise the bb by one, so you can add 5 at once and sometimes get more than one level per fuse. dont forget too that the exp gain has nothing to do with the bb going up, its a flat chance, whether the guy is lvl 1 or lvl 15.

best advice i have is go to a low energy area like mistral, and get alot of random guys to fuse into ur 6*. you'll be able to quickly tell who can level ur bb by using the method i described above.