diff --git a/Userland/Libraries/LibUnicode/CharacterTypes.cpp b/Userland/Libraries/LibUnicode/CharacterTypes.cpp
index efe19ed61d..0cdf901721 100644
--- a/Userland/Libraries/LibUnicode/CharacterTypes.cpp
+++ b/Userland/Libraries/LibUnicode/CharacterTypes.cpp
@@ -28,51 +28,6 @@ static bool has_property(UnicodeData const& unicode_data, Property property)
     return (unicode_data.properties & property) == property;
 }
 
-static bool is_cased_letter(UnicodeData const& unicode_data)
-{
-    // A character C is defined to be cased if and only if C has the Lowercase or Uppercase property
-    // or has a General_Category value of Titlecase_Letter.
-    switch (unicode_data.general_category) {
-    case GeneralCategory::Ll:
-    case GeneralCategory::Lu:
-    case GeneralCategory::Lt:
-        return true;
-    default:
-        break;
-    }
-
-    return has_property(unicode_data, Property::OtherLowercase) || has_property(unicode_data, Property::OtherUppercase);
-}
-
-static bool is_case_ignorable(UnicodeData const& unicode_data)
-{
-    // A character C is defined to be case-ignorable if C has the value MidLetter (ML),
-    // MidNumLet (MB), or Single_Quote (SQ) for the Word_Break property or its General_Category is
-    // one of Nonspacing_Mark (Mn), Enclosing_Mark (Me), Format (Cf), Modifier_Letter (Lm), or
-    // Modifier_Symbol (Sk).
-    switch (unicode_data.general_category) {
-    case GeneralCategory::Mn:
-    case GeneralCategory::Me:
-    case GeneralCategory::Cf:
-    case GeneralCategory::Lm:
-    case GeneralCategory::Sk:
-        return true;
-    default:
-        break;
-    }
-
-    switch (unicode_data.word_break_property) {
-    case WordBreakProperty::MidLetter:
-    case WordBreakProperty::MidNumLet:
-    case WordBreakProperty::SingleQuote:
-        return true;
-    default:
-        break;
-    }
-
-    return false;
-}
-
 static bool is_final_code_point(Utf8View const& string, size_t index, size_t byte_length)
 {
     // C is preceded by a sequence consisting of a cased letter and then zero or more case-ignorable
@@ -90,9 +45,12 @@ static bool is_final_code_point(Utf8View const& string, size_t index, size_t byt
         if (!unicode_data.has_value())
             return false;
 
-        if (is_cased_letter(*unicode_data) && !is_case_ignorable(*unicode_data))
+        bool is_cased = has_property(*unicode_data, Property::Cased);
+        bool is_case_ignorable = has_property(*unicode_data, Property::Case_Ignorable);
+
+        if (is_cased && !is_case_ignorable)
             ++cased_letter_count;
-        else if (!is_case_ignorable(*unicode_data))
+        else if (!is_case_ignorable)
             cased_letter_count = 0;
     }
 
@@ -104,9 +62,12 @@ static bool is_final_code_point(Utf8View const& string, size_t index, size_t byt
         if (!unicode_data.has_value())
             return false;
 
-        if (is_case_ignorable(*unicode_data))
+        bool is_cased = has_property(*unicode_data, Property::Cased);
+        bool is_case_ignorable = has_property(*unicode_data, Property::Case_Ignorable);
+
+        if (is_case_ignorable)
             continue;
-        if (is_cased_letter(*unicode_data))
+        if (is_cased)
             return false;
 
         break;
diff --git a/Userland/Libraries/LibUnicode/CodeGenerators/GenerateUnicodeData.cpp b/Userland/Libraries/LibUnicode/CodeGenerators/GenerateUnicodeData.cpp
index 66acb2af51..64652d6aac 100644
--- a/Userland/Libraries/LibUnicode/CodeGenerators/GenerateUnicodeData.cpp
+++ b/Userland/Libraries/LibUnicode/CodeGenerators/GenerateUnicodeData.cpp
@@ -573,6 +573,7 @@ int main(int argc, char** argv)
     char const* unicode_data_path = nullptr;
     char const* special_casing_path = nullptr;
     char const* prop_list_path = nullptr;
+    char const* derived_core_prop_path = nullptr;
     char const* word_break_path = nullptr;
 
     Core::ArgsParser args_parser;
@@ -581,6 +582,7 @@ int main(int argc, char** argv)
     args_parser.add_option(unicode_data_path, "Path to UnicodeData.txt file", "unicode-data-path", 'u', "unicode-data-path");
     args_parser.add_option(special_casing_path, "Path to SpecialCasing.txt file", "special-casing-path", 's', "special-casing-path");
     args_parser.add_option(prop_list_path, "Path to PropList.txt file", "prop-list-path", 'p', "prop-list-path");
+    args_parser.add_option(derived_core_prop_path, "Path to DerivedCoreProperties.txt file", "derived-core-prop-path", 'd', "derived-core-prop-path");
     args_parser.add_option(word_break_path, "Path to WordBreakProperty.txt file", "word-break-path", 'w', "word-break-path");
     args_parser.parse(argc, argv);
 
@@ -609,11 +611,13 @@ int main(int argc, char** argv)
     auto unicode_data_file = open_file(unicode_data_path, "-u/--unicode-data-path");
     auto special_casing_file = open_file(special_casing_path, "-s/--special-casing-path");
     auto prop_list_file = open_file(prop_list_path, "-p/--prop-list-path");
+    auto derived_core_prop_file = open_file(derived_core_prop_path, "-d/--derived-core-prop-path");
     auto word_break_file = open_file(word_break_path, "-w/--word-break-path");
 
     UnicodeData unicode_data {};
     parse_special_casing(special_casing_file, unicode_data);
     parse_prop_list(prop_list_file, unicode_data.prop_list);
+    parse_prop_list(derived_core_prop_file, unicode_data.prop_list);
     parse_prop_list(word_break_file, unicode_data.word_break_prop_list);
     parse_unicode_data(unicode_data_file, unicode_data);
 
diff --git a/Userland/Libraries/LibUnicode/unicode_data.cmake b/Userland/Libraries/LibUnicode/unicode_data.cmake
index 6650d0dec5..777b81680e 100644
--- a/Userland/Libraries/LibUnicode/unicode_data.cmake
+++ b/Userland/Libraries/LibUnicode/unicode_data.cmake
@@ -9,6 +9,9 @@ set(SPECIAL_CASING_PATH ${CMAKE_BINARY_DIR}/UCD/SpecialCasing.txt)
 set(PROP_LIST_URL https://www.unicode.org/Public/13.0.0/ucd/PropList.txt)
 set(PROP_LIST_PATH ${CMAKE_BINARY_DIR}/UCD/PropList.txt)
 
+set(DERIVED_CORE_PROP_URL https://www.unicode.org/Public/13.0.0/ucd/DerivedCoreProperties.txt)
+set(DERIVED_CORE_PROP_PATH ${CMAKE_BINARY_DIR}/UCD/DerivedCoreProperties.txt)
+
 set(WORD_BREAK_URL https://www.unicode.org/Public/13.0.0/ucd/auxiliary/WordBreakProperty.txt)
 set(WORD_BREAK_PATH ${CMAKE_BINARY_DIR}/UCD/WordBreakProperty.txt)
 
@@ -25,6 +28,10 @@ if (ENABLE_UNICODE_DATABASE_DOWNLOAD)
         message(STATUS "Downloading UCD PropList.txt from ${PROP_LIST_URL}...")
         file(DOWNLOAD ${PROP_LIST_URL} ${PROP_LIST_PATH} INACTIVITY_TIMEOUT 10)
     endif()
+    if (NOT EXISTS ${DERIVED_CORE_PROP_PATH})
+        message(STATUS "Downloading UCD DerivedCoreProperties.txt from ${DERIVED_CORE_PROP_URL}...")
+        file(DOWNLOAD ${DERIVED_CORE_PROP_URL} ${DERIVED_CORE_PROP_PATH} INACTIVITY_TIMEOUT 10)
+    endif()
     if (NOT EXISTS ${WORD_BREAK_PATH})
         message(STATUS "Downloading UCD WordBreakProperty.txt from ${WORD_BREAK_URL}...")
         file(DOWNLOAD ${WORD_BREAK_URL} ${WORD_BREAK_PATH} INACTIVITY_TIMEOUT 10)
@@ -40,7 +47,7 @@ if (ENABLE_UNICODE_DATABASE_DOWNLOAD)
 
     add_custom_command(
         OUTPUT ${UNICODE_DATA_HEADER}
-        COMMAND ${write_if_different} ${UNICODE_DATA_HEADER} $<TARGET_FILE:GenerateUnicodeData> -h -u ${UNICODE_DATA_PATH} -s ${SPECIAL_CASING_PATH} -p ${PROP_LIST_PATH} -w ${WORD_BREAK_PATH}
+        COMMAND ${write_if_different} ${UNICODE_DATA_HEADER} $<TARGET_FILE:GenerateUnicodeData> -h -u ${UNICODE_DATA_PATH} -s ${SPECIAL_CASING_PATH} -p ${PROP_LIST_PATH} -d ${DERIVED_CORE_PROP_PATH} -w ${WORD_BREAK_PATH}
         VERBATIM
         DEPENDS GenerateUnicodeData
         MAIN_DEPENDENCY ${UNICODE_DATA_PATH} ${SPECIAL_CASING_PATH}
@@ -48,7 +55,7 @@ if (ENABLE_UNICODE_DATABASE_DOWNLOAD)
 
     add_custom_command(
         OUTPUT ${UNICODE_DATA_IMPLEMENTATION}
-        COMMAND ${write_if_different} ${UNICODE_DATA_IMPLEMENTATION} $<TARGET_FILE:GenerateUnicodeData> -c -u ${UNICODE_DATA_PATH} -s ${SPECIAL_CASING_PATH} -p ${PROP_LIST_PATH} -w ${WORD_BREAK_PATH}
+        COMMAND ${write_if_different} ${UNICODE_DATA_IMPLEMENTATION} $<TARGET_FILE:GenerateUnicodeData> -c -u ${UNICODE_DATA_PATH} -s ${SPECIAL_CASING_PATH} -p ${PROP_LIST_PATH} -d ${DERIVED_CORE_PROP_PATH} -w ${WORD_BREAK_PATH}
         VERBATIM
         DEPENDS GenerateUnicodeData
         MAIN_DEPENDENCY ${UNICODE_DATA_PATH} ${SPECIAL_CASING_PATH}