> For the complete documentation index, see [llms.txt](https://starfall-handbook.rosentica.jp/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://starfall-handbook.rosentica.jp/combat-system/debuff-application-check.md).

# Debuff Application Check

The Debuff Application Check functions similarly to the critical hit check, determining whether a debuff successfully applies to a target. This process involves calculating the Debuff Application rate of the debuff caster and the Debuff Resistance rate of the target.

The formula is as follows:

* **Final Application Rate = Applier's Debuff Application Rate - Receiver's Debuff Resistance Rate**