For the players with ★5 rarity, you may limit break them upon meeting one of the conditions that listed below:
[Limit Break Conditions]
・You have the same name of the player with the ★5 initial rarity.
・You have the limit break materials.
[Warning]
Upon using players as a materials to perform limit break, be mindful that the following details will be the results:
・Limit Break Level of the player as material: 5 level → Limit Break Level Increase number of the based player: 3 level
・Limit Break Level of the player as material: 4 level → Limit Break Level Increase number of the based player: 2 level
・Limit Break Level of the player as material: 3 level → Limit Break Level Increase number of the based player: 2 level
・Limit Break Level of the player as material: 2 level → Limit Break Level Increase number of the based player: 1 level
・Limit Break Level of the player as material: 1 level → Limit Break Level Increase number of the based player: 1 level
Regarding strengthening players via Limit Break, please verify here.