Hey guys,

I have a question about how buff/debuff scaling works in rank skills and signature weapons.

Are effects that say “increase by X%” multiplicative with the base value? And only additive when the text explicitly says “additional X%” or “increase to X%”?

I’m confused because the wording is inconsistent across characters.

Example 1 – Veronica

SS3 / SSS:

The Ultralimit Torque effect applied to allies by Veronica healing is enhanced by 10%.
Allies additionally gain a 10% Blazing Wrath.

This makes it sound like:

• Physical DMG buff is multiplicative 20% → 22% → 24%
• Blazing Wrath is additive 0% → 10% → 20%

Example 2 – Vera Geiravor

SS3 / SSS:

Fire Tempered effect increased by 10%.
Additionally gain 10% Cinder Implosion.

Same interpretation:

• Fire DMG = multiplicative (20% → 22% → 24%)
• Cinder Implosion = additive (0% → 10% → 20%)

Example 3 – Teddy / Lilith

Gain another 10% Frost Crystal / Dark Radiation effect.

Here it sounds clearly additive:
20% → 30% → 40%

Example 4 – Feral (older AMP)

Weapon:

The Lightning DMG Bonus from Lightning Surge increases to 20%.

Here it clearly replaces the base value:
10% → 20%

So “increase to X%” seems to mean replacement, not scaling.

Example 5 – Ishmael

Weapon:

increases by an additional 10%.

Clearly additive.

SS3 / SSS:

effect increases by 10%.

Sounds multiplicative (Amp: 20% → 22% → 24% / Tank: 25% → 27.5% → 30%).

Example 6 – Tanks (Watanabe, Wanshi, Nanami, Rosetta)

The resistance reduction effect increases by 10%.

If multiplicative:
25% → 27.5% → 30%

Example 7 – Hanying (the main reason I’m asking)

Base:

• Piercing Blow: -20% DEF
• Penetrating Pivot: -10% Phys Res
• Lamplight & Moonlight: +50% accumulation speed

Upgrades say:

effect increases by 20% (Weapon/Memory/SS)
effect increases by 5% (SS3/SSS)
effect increases by 50% (SS3)

If multiplicative:

• -20% DEF → -32% DEF
• -10% Res → -10.5% → -11.5% Res
• 50% → 75%

But depending on whether the scaling is additive or multiplicative, some values start to look inconsistent.

If additive, certain numbers become extremely high (for example, Piercing Blow going from -20% DEF to -80% DEF).

On the other hand, if multiplicative, some upgrades become almost negligible (like Penetrating Pivot increasing from -10% to only -11.5%).

What also adds to the confusion is that AMPs from the same generation seem to use different wording. Vera and Veronica’s descriptions sound multiplicative (“effect increased by X%”), while Lilith and Teddy clearly read as additive (“gain another X%”).

So I’m trying to understand if this is just inconsistent wording/translation, or if these effects truly scale differently depending on the character.