diff --git a/develop/singles/headers/meta.hpp/meta_all.hpp b/develop/singles/headers/meta.hpp/meta_all.hpp
index 41f1e20..f3c3da2 100644
--- a/develop/singles/headers/meta.hpp/meta_all.hpp
+++ b/develop/singles/headers/meta.hpp/meta_all.hpp
@@ -2570,10 +2570,18 @@ namespace meta_hpp
         [[nodiscard]] bool is_base_of() const noexcept;
         [[nodiscard]] bool is_base_of(const class_type& derived) const noexcept;
 
+        template < detail::class_kind Derived >
+        [[nodiscard]] bool is_direct_base_of() const noexcept;
+        [[nodiscard]] bool is_direct_base_of(const class_type& derived) const noexcept;
+
         template < detail::class_kind Base >
         [[nodiscard]] bool is_derived_from() const noexcept;
         [[nodiscard]] bool is_derived_from(const class_type& base) const noexcept;
 
+        template < detail::class_kind Base >
+        [[nodiscard]] bool is_direct_derived_from() const noexcept;
+        [[nodiscard]] bool is_direct_derived_from(const class_type& base) const noexcept;
+
         [[nodiscard]] function get_function(std::string_view name) const noexcept;
         [[nodiscard]] member get_member(std::string_view name) const noexcept;
         [[nodiscard]] method get_method(std::string_view name) const noexcept;
@@ -8186,15 +8194,16 @@ namespace meta_hpp
     }
 
     inline bool class_type::is_base_of(const class_type& derived) const noexcept {
-        if ( !is_valid() || !derived.is_valid() ) {
-            return false;
-        }
+        return is_valid() && derived.is_valid() && derived.data_->deep_upcasts.contains(*this);
+    }
 
-        if ( derived.data_->deep_upcasts.contains(*this) ) {
-            return true;
-        }
+    template < detail::class_kind Derived >
+    bool class_type::is_direct_base_of() const noexcept {
+        return is_direct_base_of(resolve_type<Derived>());
+    }
 
-        return false;
+    inline bool class_type::is_direct_base_of(const class_type& derived) const noexcept {
+        return is_valid() && derived.is_valid() && derived.data_->base_upcasts.contains(*this);
     }
 
     template < detail::class_kind Base >
@@ -8203,15 +8212,16 @@ namespace meta_hpp
     }
 
     inline bool class_type::is_derived_from(const class_type& base) const noexcept {
-        if ( !is_valid() || !base.is_valid() ) {
-            return false;
-        }
+        return is_valid() && base.is_valid() && data_->deep_upcasts.contains(base);
+    }
 
-        if ( data_->deep_upcasts.contains(base) ) {
-            return true;
-        }
+    template < detail::class_kind Base >
+    bool class_type::is_direct_derived_from() const noexcept {
+        return is_direct_derived_from(resolve_type<Base>());
+    }
 
-        return false;
+    inline bool class_type::is_direct_derived_from(const class_type& base) const noexcept {
+        return is_valid() && base.is_valid() && data_->base_upcasts.contains(base);
     }
 
     inline function class_type::get_function(std::string_view name) const noexcept {
diff --git a/develop/untests/meta_types/class_type_tests.cpp b/develop/untests/meta_types/class_type_tests.cpp
index 7ab1db3..e31eb6a 100644
--- a/develop/untests/meta_types/class_type_tests.cpp
+++ b/develop/untests/meta_types/class_type_tests.cpp
@@ -248,40 +248,62 @@ TEST_CASE("meta/meta_types/class_type") {
         {
             CHECK_FALSE(base_clazz_1_type.is_base_of<base_clazz_1>());
             CHECK_FALSE(base_clazz_1_type.is_base_of(base_clazz_1_type));
+            CHECK_FALSE(base_clazz_1_type.is_direct_base_of<base_clazz_1>());
+            CHECK_FALSE(base_clazz_1_type.is_direct_base_of(base_clazz_1_type));
 
             CHECK_FALSE(base_clazz_1_type.is_base_of<base_clazz_2>());
             CHECK_FALSE(base_clazz_1_type.is_base_of(base_clazz_2_type));
+            CHECK_FALSE(base_clazz_1_type.is_direct_base_of<base_clazz_2>());
+            CHECK_FALSE(base_clazz_1_type.is_direct_base_of(base_clazz_2_type));
 
             CHECK(base_clazz_1_type.is_base_of<derived_clazz>());
             CHECK(base_clazz_1_type.is_base_of(derived_clazz_type));
+            CHECK(base_clazz_1_type.is_direct_base_of<derived_clazz>());
+            CHECK(base_clazz_1_type.is_direct_base_of(derived_clazz_type));
 
             CHECK(base_clazz_1_type.is_base_of<final_derived_clazz>());
             CHECK(base_clazz_1_type.is_base_of(final_derived_clazz_type));
+            CHECK_FALSE(base_clazz_1_type.is_direct_base_of<final_derived_clazz>());
+            CHECK_FALSE(base_clazz_1_type.is_direct_base_of(final_derived_clazz_type));
         }
 
         {
             CHECK_FALSE(base_clazz_2_type.is_base_of<base_clazz_1>());
             CHECK_FALSE(base_clazz_2_type.is_base_of(base_clazz_1_type));
+            CHECK_FALSE(base_clazz_2_type.is_direct_base_of<base_clazz_1>());
+            CHECK_FALSE(base_clazz_2_type.is_direct_base_of(base_clazz_1_type));
 
             CHECK_FALSE(base_clazz_2_type.is_base_of<base_clazz_2>());
             CHECK_FALSE(base_clazz_2_type.is_base_of(base_clazz_2_type));
+            CHECK_FALSE(base_clazz_2_type.is_direct_base_of<base_clazz_2>());
+            CHECK_FALSE(base_clazz_2_type.is_direct_base_of(base_clazz_2_type));
 
             CHECK(base_clazz_2_type.is_base_of<derived_clazz>());
             CHECK(base_clazz_2_type.is_base_of(derived_clazz_type));
+            CHECK(base_clazz_2_type.is_direct_base_of<derived_clazz>());
+            CHECK(base_clazz_2_type.is_direct_base_of(derived_clazz_type));
 
             CHECK(base_clazz_2_type.is_base_of<final_derived_clazz>());
             CHECK(base_clazz_2_type.is_base_of(final_derived_clazz_type));
+            CHECK_FALSE(base_clazz_2_type.is_direct_base_of<final_derived_clazz>());
+            CHECK_FALSE(base_clazz_2_type.is_direct_base_of(final_derived_clazz_type));
         }
 
         {
             CHECK_FALSE(derived_clazz_type.is_base_of<base_clazz_1>());
             CHECK_FALSE(derived_clazz_type.is_base_of(base_clazz_1_type));
+            CHECK_FALSE(derived_clazz_type.is_direct_base_of<base_clazz_1>());
+            CHECK_FALSE(derived_clazz_type.is_direct_base_of(base_clazz_1_type));
 
             CHECK_FALSE(derived_clazz_type.is_base_of<base_clazz_2>());
             CHECK_FALSE(derived_clazz_type.is_base_of(base_clazz_2_type));
+            CHECK_FALSE(derived_clazz_type.is_direct_base_of<base_clazz_2>());
+            CHECK_FALSE(derived_clazz_type.is_direct_base_of(base_clazz_2_type));
 
             CHECK_FALSE(derived_clazz_type.is_base_of<derived_clazz>());
             CHECK_FALSE(derived_clazz_type.is_base_of(derived_clazz_type));
+            CHECK_FALSE(derived_clazz_type.is_direct_base_of<derived_clazz>());
+            CHECK_FALSE(derived_clazz_type.is_direct_base_of(derived_clazz_type));
         }
     }
 
@@ -289,45 +311,69 @@ TEST_CASE("meta/meta_types/class_type") {
         {
             CHECK_FALSE(base_clazz_1_type.is_derived_from<base_clazz_1>());
             CHECK_FALSE(base_clazz_1_type.is_derived_from(base_clazz_1_type));
+            CHECK_FALSE(base_clazz_1_type.is_direct_derived_from<base_clazz_1>());
+            CHECK_FALSE(base_clazz_1_type.is_direct_derived_from(base_clazz_1_type));
 
             CHECK_FALSE(base_clazz_1_type.is_derived_from<base_clazz_2>());
             CHECK_FALSE(base_clazz_1_type.is_derived_from(base_clazz_2_type));
+            CHECK_FALSE(base_clazz_1_type.is_direct_derived_from<base_clazz_2>());
+            CHECK_FALSE(base_clazz_1_type.is_direct_derived_from(base_clazz_2_type));
 
             CHECK_FALSE(base_clazz_1_type.is_derived_from<derived_clazz>());
             CHECK_FALSE(base_clazz_1_type.is_derived_from(derived_clazz_type));
+            CHECK_FALSE(base_clazz_1_type.is_direct_derived_from<derived_clazz>());
+            CHECK_FALSE(base_clazz_1_type.is_direct_derived_from(derived_clazz_type));
         }
 
         {
             CHECK_FALSE(base_clazz_2_type.is_derived_from<base_clazz_1>());
             CHECK_FALSE(base_clazz_2_type.is_derived_from(base_clazz_1_type));
+            CHECK_FALSE(base_clazz_2_type.is_direct_derived_from<base_clazz_1>());
+            CHECK_FALSE(base_clazz_2_type.is_direct_derived_from(base_clazz_1_type));
 
             CHECK_FALSE(base_clazz_2_type.is_derived_from<base_clazz_2>());
             CHECK_FALSE(base_clazz_2_type.is_derived_from(base_clazz_2_type));
+            CHECK_FALSE(base_clazz_2_type.is_direct_derived_from<base_clazz_2>());
+            CHECK_FALSE(base_clazz_2_type.is_direct_derived_from(base_clazz_2_type));
 
             CHECK_FALSE(base_clazz_2_type.is_derived_from<derived_clazz>());
             CHECK_FALSE(base_clazz_2_type.is_derived_from(derived_clazz_type));
+            CHECK_FALSE(base_clazz_2_type.is_direct_derived_from<derived_clazz>());
+            CHECK_FALSE(base_clazz_2_type.is_direct_derived_from(derived_clazz_type));
         }
 
         {
             CHECK(derived_clazz_type.is_derived_from<base_clazz_1>());
             CHECK(derived_clazz_type.is_derived_from(base_clazz_1_type));
+            CHECK(derived_clazz_type.is_direct_derived_from<base_clazz_1>());
+            CHECK(derived_clazz_type.is_direct_derived_from(base_clazz_1_type));
 
             CHECK(derived_clazz_type.is_derived_from<base_clazz_2>());
             CHECK(derived_clazz_type.is_derived_from(base_clazz_2_type));
+            CHECK(derived_clazz_type.is_direct_derived_from<base_clazz_2>());
+            CHECK(derived_clazz_type.is_direct_derived_from(base_clazz_2_type));
 
             CHECK_FALSE(derived_clazz_type.is_derived_from<derived_clazz>());
             CHECK_FALSE(derived_clazz_type.is_derived_from(derived_clazz_type));
+            CHECK_FALSE(derived_clazz_type.is_direct_derived_from<derived_clazz>());
+            CHECK_FALSE(derived_clazz_type.is_direct_derived_from(derived_clazz_type));
         }
 
         {
             CHECK(final_derived_clazz_type.is_derived_from<base_clazz_1>());
             CHECK(final_derived_clazz_type.is_derived_from(base_clazz_1_type));
+            CHECK_FALSE(final_derived_clazz_type.is_direct_derived_from<base_clazz_1>());
+            CHECK_FALSE(final_derived_clazz_type.is_direct_derived_from(base_clazz_1_type));
 
             CHECK(final_derived_clazz_type.is_derived_from<base_clazz_2>());
             CHECK(final_derived_clazz_type.is_derived_from(base_clazz_2_type));
+            CHECK_FALSE(final_derived_clazz_type.is_direct_derived_from<base_clazz_2>());
+            CHECK_FALSE(final_derived_clazz_type.is_direct_derived_from(base_clazz_2_type));
 
             CHECK(final_derived_clazz_type.is_derived_from<derived_clazz>());
             CHECK(final_derived_clazz_type.is_derived_from(derived_clazz_type));
+            CHECK(final_derived_clazz_type.is_direct_derived_from<derived_clazz>());
+            CHECK(final_derived_clazz_type.is_direct_derived_from(derived_clazz_type));
         }
     }
 
diff --git a/headers/meta.hpp/meta_types.hpp b/headers/meta.hpp/meta_types.hpp
index f344832..26661ac 100644
--- a/headers/meta.hpp/meta_types.hpp
+++ b/headers/meta.hpp/meta_types.hpp
@@ -180,10 +180,18 @@ namespace meta_hpp
         [[nodiscard]] bool is_base_of() const noexcept;
         [[nodiscard]] bool is_base_of(const class_type& derived) const noexcept;
 
+        template < detail::class_kind Derived >
+        [[nodiscard]] bool is_direct_base_of() const noexcept;
+        [[nodiscard]] bool is_direct_base_of(const class_type& derived) const noexcept;
+
         template < detail::class_kind Base >
         [[nodiscard]] bool is_derived_from() const noexcept;
         [[nodiscard]] bool is_derived_from(const class_type& base) const noexcept;
 
+        template < detail::class_kind Base >
+        [[nodiscard]] bool is_direct_derived_from() const noexcept;
+        [[nodiscard]] bool is_direct_derived_from(const class_type& base) const noexcept;
+
         [[nodiscard]] function get_function(std::string_view name) const noexcept;
         [[nodiscard]] member get_member(std::string_view name) const noexcept;
         [[nodiscard]] method get_method(std::string_view name) const noexcept;
diff --git a/headers/meta.hpp/meta_types/class_type.hpp b/headers/meta.hpp/meta_types/class_type.hpp
index e9e05b8..bdff667 100644
--- a/headers/meta.hpp/meta_types/class_type.hpp
+++ b/headers/meta.hpp/meta_types/class_type.hpp
@@ -168,15 +168,16 @@ namespace meta_hpp
     }
 
     inline bool class_type::is_base_of(const class_type& derived) const noexcept {
-        if ( !is_valid() || !derived.is_valid() ) {
-            return false;
-        }
+        return is_valid() && derived.is_valid() && derived.data_->deep_upcasts.contains(*this);
+    }
 
-        if ( derived.data_->deep_upcasts.contains(*this) ) {
-            return true;
-        }
+    template < detail::class_kind Derived >
+    bool class_type::is_direct_base_of() const noexcept {
+        return is_direct_base_of(resolve_type<Derived>());
+    }
 
-        return false;
+    inline bool class_type::is_direct_base_of(const class_type& derived) const noexcept {
+        return is_valid() && derived.is_valid() && derived.data_->base_upcasts.contains(*this);
     }
 
     template < detail::class_kind Base >
@@ -185,15 +186,16 @@ namespace meta_hpp
     }
 
     inline bool class_type::is_derived_from(const class_type& base) const noexcept {
-        if ( !is_valid() || !base.is_valid() ) {
-            return false;
-        }
+        return is_valid() && base.is_valid() && data_->deep_upcasts.contains(base);
+    }
 
-        if ( data_->deep_upcasts.contains(base) ) {
-            return true;
-        }
+    template < detail::class_kind Base >
+    bool class_type::is_direct_derived_from() const noexcept {
+        return is_direct_derived_from(resolve_type<Base>());
+    }
 
-        return false;
+    inline bool class_type::is_direct_derived_from(const class_type& base) const noexcept {
+        return is_valid() && base.is_valid() && data_->base_upcasts.contains(base);
     }
 
     inline function class_type::get_function(std::string_view name) const noexcept {