Basically you're prompted at level 750-1000(Not my call)on what you can upgrade, though the upgrade itself is permanent, unless you switch Fullbrings, which than you must level up again to choose which upgrade (might have to work on that, if you see the problem with it)
Ichigo upgrades:
Getsuga rings- can upgrade rings to 4-5 instead of just 3.
Getsuga damage- increases the damage dealt by each Getsuga ring by a small percent( probably about .75%)
Getsuga ring wave- Increase the Getsuga ring to 2 tiles instead of one.
Ginjo upgrades:
Bringer Blast length- increases bring blast to 4 tiles.
Bringer blast damage- increases the power dealt by the blast (not sure by how much)
Bringer absorb- Absorbs 10% of the damage of a projectile it comes into contact with.
Jackie upgrades:
Critical burst: increases length of hit by 2 tiles instead of 1, but each use consumes wounds and rei.
Critical stun: Has a 5-30% chance of stuning anyone hit for 1-2 seconds, but uses up wounds.
Yukio upgrades:
Monster summoning: Can increase the amount of monsters summoned(Max 6-
Monster power: you're prompted to make a monster with 1/3 of your health and 10-20% of your current boost( Has a 3 minute delay, and the max is 2)
Tsukishima upgrades:
Harmful recoil: When user hits the attacker, the attacker can damage themselves for that one attack( Has a 2 minute cool down).
Ichigo upgrades:
Getsuga rings- can upgrade rings to 4-5 instead of just 3.
Getsuga damage- increases the damage dealt by each Getsuga ring by a small percent( probably about .75%)
Getsuga ring wave- Increase the Getsuga ring to 2 tiles instead of one.
Ginjo upgrades:
Bringer Blast length- increases bring blast to 4 tiles.
Bringer blast damage- increases the power dealt by the blast (not sure by how much)
Bringer absorb- Absorbs 10% of the damage of a projectile it comes into contact with.
Jackie upgrades:
Critical burst: increases length of hit by 2 tiles instead of 1, but each use consumes wounds and rei.
Critical stun: Has a 5-30% chance of stuning anyone hit for 1-2 seconds, but uses up wounds.
Yukio upgrades:
Monster summoning: Can increase the amount of monsters summoned(Max 6-
Monster power: you're prompted to make a monster with 1/3 of your health and 10-20% of your current boost( Has a 3 minute delay, and the max is 2)
Tsukishima upgrades:
Harmful recoil: When user hits the attacker, the attacker can damage themselves for that one attack( Has a 2 minute cool down).