diff --git a/.changeset/loud-ducks-compete.md b/.changeset/loud-ducks-compete.md
new file mode 100644
index 0000000..50de998
--- /dev/null
+++ b/.changeset/loud-ducks-compete.md
@@ -0,0 +1,5 @@
+---
+'k-popo': patch
+---
+
+Shave a few more bytes off
diff --git a/README.md b/README.md
index 6aa9ba6..249b7ab 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ ko`${schedule}(이)여서 추가할 수 없어요. ${role}(이)가 필요합니
 
 ### `ko: (template: TemplateStringsArray, ...words: (string | [string, string])[]) => string`
 
-Resolves all Korean [_postposition tokens_](#available-postposition-tokens) that are placed directly after a placeholder.
+Replaces all Korean [_postposition tokens_](#available-postposition-tokens) that are placed directly after a placeholder.
 
 ```js
 expect(ko`${'디자이너'}(으)로서 좌시할 수 없다.`).toBe('디자이너로서 좌시할 수 없다.')
@@ -47,7 +47,7 @@ expect(ko`${`너(당신)`}(은)는 모른다.`).toBe(`너(당신)는 모른다.`
 expect(ko`${`당신(너)`}(은)는 모른다.`).toBe(`당신(너)은 모른다.`)
 ```
 
-`ko` can also resolve tokens against numbers:
+`ko` can also replace tokens against numbers:
 
 ```js
 expect(ko`알고 계셨나요? ${'1'}(은)는 미지의 수입니다.`).toBe('알고 계셨나요? 1은 미지의 수입니다.')
diff --git a/src/getLastChar.ts b/src/getLastChar.ts
index a69d077..5f7fcb4 100644
--- a/src/getLastChar.ts
+++ b/src/getLastChar.ts
@@ -1,6 +1,4 @@
-const getLastChar = (str: string): string => {
-  let stripped = str.replace(/'|"|\([^)]*\)/g, '')
-  return stripped[stripped.length - 1] // no path where str is empty
-}
+// str is guaranteed to be non-empty so this won't throw
+const getLastChar = (str: string): string => (str = str.replace(/'|"|\([^)]*\)/g, ''))[str.length - 1]
 
 export { getLastChar }
diff --git a/src/ko.ts b/src/ko.ts
index ef64e58..1895134 100644
--- a/src/ko.ts
+++ b/src/ko.ts
@@ -3,10 +3,13 @@ import { resolve } from './resolve'
 type Parameter = string | readonly [display: string, pronunciation: string]
 
 /**
- * Resolves all postposition tokens right after a template slot to a fitting one.
+ * Replaces all postposition tokens right after a template slot to a proper one.
  *
  * `(은)는`, `(이)가`, `(을)를`, `(과)와`, `(으)로`, `(이)여`, `(이)`, and `(아)야` are available.
  *
+ * Note that `ko()` does not support decomposed (NFD) Hangul characters.
+ * Use [`${word.normalize('NFC')}`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/normalize) if you need to.
+ *
  * @example
  * ko`그러자 ${name}(을)를 찾으며 말씀하시었으니, "${name}"(아)야, 어디 있느냐?`
  * // name=재민: 그러자 재민을 찾으며 말씀하시었으니, 재민아, 어디 있느냐?
diff --git a/src/resolve.ts b/src/resolve.ts
index 9f745c0..7106c4e 100644
--- a/src/resolve.ts
+++ b/src/resolve.ts
@@ -27,13 +27,16 @@ const foreignCharsRecord: Readonly<Record<string, number>> = {
   p: 1,
 }
 
-const hasNoCoda = (char: string, ignoreRieul: boolean): boolean => {
-  let coda = char >= '가' && char <= '힣' ? (char.charCodeAt(0) - 0xac00) % 28 : foreignCharsRecord[char] || 0
-  return !coda || (ignoreRieul && coda == 8)
+const hasNoCoda = (char: string, ignore_ㄹ: boolean): boolean => {
+  let coda = char >= '가' && char <= '힣' ? (char.charCodeAt(0) - 16) % 28 : foreignCharsRecord[char]
+  return !coda || (ignore_ㄹ && coda == 8)
 }
 
 /**
- * Resolve a postposition token into a fitting postposition, based on the word specified.
+ * Returns a proper postposition from given `tokenString` based on the `testString`.
+ *
+ * Note that `resolve()` does not support decomposed (NFD) Hangul characters.
+ * Use [`testString.normalize('NFC')`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/normalize) if you need to.
  *
  * @param tokenString A string starting with one of supported Korean postposition tokens. `(은)는`, `(이)가`, `(을)를`, `(과)와`, `(으)로`, `(이)여`, `(이)`, and `(아)야` are available.
  * @param testString A string to resolve the token against.