Since I was able to obtain "Goku: SSGSS" with the login bonus of the Welcome Back Camper today, I tried to strengthen it by breaking the top of the first time.
What you need to break through the top is a fragment of the character you want to break through. Please note that the number of required fragments will differ depending on the number of breakthroughs and rarity.
The first breakthrough is OK with 1 pieces. The status has increased to about 10 times.
Welcome back camper ends when you get it for 7 days. Next, when will Goku: SSGSS and Vegeta: SGSSS be available? I want to strengthen it further. For the time being, I'm awake! ! !