diff --git a/src/include/color.hpp b/src/include/color.hpp
new file mode 100644
index 0000000..39dff2d
--- /dev/null
+++ b/src/include/color.hpp
@@ -0,0 +1,57 @@
+#ifndef SANAE_COLOR_HPP
+#define SANAE_COLOR_HPP
+
+#include <cstdint>
+#include <string>
+#include <sstream>
+
+class FontColor {
+public:
+    static constexpr const char* CLEAR  = "\033[39m";
+    static constexpr const char* BLACK  = "\033[30m";
+    static constexpr const char* RED    = "\033[31m";
+    static constexpr const char* GREEN  = "\033[32m";
+    static constexpr const char* YELLOW = "\033[33m";
+    static constexpr const char* BLUE   = "\033[34m";
+    static constexpr const char* PURPLE = "\033[35m";
+    static constexpr const char* CYAN   = "\033[36m";
+    static constexpr const char* WHITE  = "\033[37m";
+
+    static std::string RGB(uint8_t R, uint8_t G, uint8_t B){
+        std::stringstream buf;
+        buf << "\033[38;2;" << std::to_string(R) << ";" << std::to_string(G) << ";" << std::to_string(B) << "m";
+
+        return buf.str();
+    }
+};
+
+class BgColor {
+public:
+    static constexpr const char* CLEAR  = "\033[49m";
+    static constexpr const char* BLACK  = "\033[40m";
+    static constexpr const char* RED    = "\033[41m";
+    static constexpr const char* GREEN  = "\033[42m";
+    static constexpr const char* YELLOW = "\033[43m";
+    static constexpr const char* BLUE   = "\033[44m";
+    static constexpr const char* PURPLE = "\033[45m";
+    static constexpr const char* CYAN   = "\033[46m";
+    static constexpr const char* WHITE  = "\033[47m";
+
+    static std::string RGB(uint8_t R, uint8_t G, uint8_t B){
+        std::stringstream buf;
+        buf << "\033[48;2;" << std::to_string(R) << ";" << std::to_string(G) << ";" << std::to_string(B) << "m";
+
+        return buf.str();
+    }
+};
+
+template<typename ColorType>
+requires std::same_as<ColorType,std::string> || std::same_as<ColorType, const char*>
+static std::string highlight(ColorType color, std::string text){
+    std::stringstream buf;
+    buf << color << text << FontColor::CLEAR << BgColor::CLEAR;
+
+    return buf.str();
+}
+
+#endif // SANAE_COLOR_HPP
\ No newline at end of file
diff --git a/src/include/neuralnetwork/layers/Convolution.hpp b/src/include/neuralnetwork/layers/Convolution.hpp
new file mode 100644
index 0000000..205a378
--- /dev/null
+++ b/src/include/neuralnetwork/layers/Convolution.hpp
@@ -0,0 +1,74 @@
+#ifndef SANAE_NEURALNETWORK_CONVOLUTION_HPP
+#define SANAE_NEURALNETWORK_CONVOLUTION_HPP
+
+#include <algorithm>
+#include <execution>
+#include <math.h>
+#include <iostream>
+#include "layerbase.hpp"
+#include "../../matrix/matrix" // MatrixクラスとStdExecPolicyコンセプト
+
+// 畳み込みレイヤー
+template<typename ty, typename ExecPolicy = std::execution::sequenced_policy>
+requires StdExecPolicy<ExecPolicy>
+class Convolution : public LayerBase<ty> {
+private:
+    using Kernel = std::vector<Matrix<ty>>;
+
+    const size_t _kernel_width;
+    const size_t _kernel_height;
+
+    const size_t _in_channel_size;
+    const size_t _out_channel_size;
+
+    Kernel kernel;
+
+public:
+    static constexpr std::string_view name() { return "Convolution"; }
+    
+    Convolution(size_t kernel_width, size_t kernel_height, size_t in_channel_size, size_t out_channel_size)
+        : _kernel_width(kernel_width),
+          _kernel_height(kernel_height),
+          _in_channel_size(in_channel_size),
+          _out_channel_size(out_channel_size)
+    {
+        for(size_t i = 0; i < ){
+
+        }
+    }
+
+    /**
+     * 前向き伝播
+     * @param in 入力
+     * @return 出力
+     * @note out = 1 / (1 + exp(-in))
+     */
+    Matrix<ty> forward(const Matrix<ty>& in) override{
+        try{
+
+
+        }
+        catch(const std::exception& e){
+            std::cerr << "Error in Convolution forward: " << e.what() << std::endl;
+            throw;
+        }
+    }
+    /**
+     * 逆伝播
+     * @param dout 出力の勾配
+     * @return 入力の勾配
+     * @note dx = dout ⊙ (out ⊙ (1 - out))
+     */
+    Matrix<ty> backward(const Matrix<ty>& dout) override{
+        try{
+
+
+        }
+        catch(const std::exception& e){
+            std::cerr << "Error in Convolution backward: " << e.what() << std::endl;
+            throw;
+        }
+    }
+};
+
+#endif //SANAE_NEURALNETWORK_CONVOLUTION_HPP
\ No newline at end of file