diff --git a/main.cpp b/main.cpp
index fcfbd6f..739f12c 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,6 +1,55 @@
-#include <stdio.h>
+#include <GLFW/glfw3.h>
+
+#include <imgui.h>
+#include <imgui_impl_glfw.h>
+#include <imgui_impl_opengl3.h>
+
+int main(int, char**)
+{
+    if (!glfwInit())
+        return 1;
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
+    GLFWwindow* window = glfwCreateWindow(1280, 720, "microsa", nullptr, nullptr);
+    if (window == nullptr) {
+        glfwTerminate();
+        return 1;
+    }
+    glfwMakeContextCurrent(window);
+    glfwSwapInterval(1);
+
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;
+    ImGui::StyleColorsDark();
+    ImGui_ImplGlfw_InitForOpenGL(window, true);
+    ImGui_ImplOpenGL3_Init("#version 130");
+
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+    while (!glfwWindowShouldClose(window)) {
+        glfwPollEvents();
+
+        ImGui_ImplOpenGL3_NewFrame();
+        ImGui_ImplGlfw_NewFrame();
+        ImGui::NewFrame();
+
+        // Rendering
+        ImGui::Render();
+        int display_w, display_h;
+        glfwGetFramebufferSize(window, &display_w, &display_h);
+        glViewport(0, 0, display_w, display_h);
+        glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
+        glClear(GL_COLOR_BUFFER_BIT);
+        ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+        glfwSwapBuffers(window);
+    }
+
+    ImGui_ImplOpenGL3_Shutdown();
+    ImGui_ImplGlfw_Shutdown();
+    ImGui::DestroyContext();
+
+    glfwDestroyWindow(window);
+    glfwTerminate();
 
-int main(int, char**) {
-    printf("hello\n");
     return 0;
 }