diff --git a/Library/PAX_SAPIENTICA/Simulation/ConvertToMercatorCoordinate.hpp b/Library/PAX_SAPIENTICA/Simulation/ConvertToMercatorCoordinate.hpp
index c67e52743..640733fa6 100644
--- a/Library/PAX_SAPIENTICA/Simulation/ConvertToMercatorCoordinate.hpp
+++ b/Library/PAX_SAPIENTICA/Simulation/ConvertToMercatorCoordinate.hpp
@@ -18,11 +18,12 @@
 
 #include <cmath>
 
+#include <PAX_SAPIENTICA/Simulation/SimulationConst.hpp>
 #include <PAX_SAPIENTICA/Type/Vector2.hpp>
 
 namespace paxs {
     template <typename T>
-    Vector2<double> convertToMercatorCoordinate(const Vector2<T>& start_position, const Vector2<T>& position, const int z, const int pixel_size) {
+    Vector2<double> convertToMercatorCoordinate(const Vector2<T>& start_position, const Vector2<T>& position, const int z) {
         const double n = std::pow(2, z);
         const double pixel_sum = pixel_size * n;
         const double u = (double)position.x / pixel_sum + start_position.x / n;
diff --git a/Library/PAX_SAPIENTICA/Simulation/Data.hpp b/Library/PAX_SAPIENTICA/Simulation/Data.hpp
index 97455b4fe..ee780048c 100644
--- a/Library/PAX_SAPIENTICA/Simulation/Data.hpp
+++ b/Library/PAX_SAPIENTICA/Simulation/Data.hpp
@@ -19,6 +19,7 @@
 #include <PAX_SAPIENTICA/CuiOutput/Graphic.hpp>
 #include <PAX_SAPIENTICA/FileRead/Convert.hpp>
 #include <PAX_SAPIENTICA/FileRead/Read.hpp>
+#include <PAX_SAPIENTICA/Simulation/SimulationConst.hpp>
 #include <PAX_SAPIENTICA/Type/Vector2.hpp>
 
 #include <iostream>
@@ -72,8 +73,6 @@ namespace paxs {
             return itr->second;
         }
     private:
-        const int pixel_size = 256;
-        
         Vector2 start_position;
         Vector2 end_position;
         std::string name;
diff --git a/Library/PAX_SAPIENTICA/Simulation/Environment.hpp b/Library/PAX_SAPIENTICA/Simulation/Environment.hpp
index e36dcdfde..52bd071b4 100644
--- a/Library/PAX_SAPIENTICA/Simulation/Environment.hpp
+++ b/Library/PAX_SAPIENTICA/Simulation/Environment.hpp
@@ -29,6 +29,7 @@
 #include <PAX_SAPIENTICA/FileRead/Split.hpp>
 #include <PAX_SAPIENTICA/Simulation/Data.hpp>
 #include <PAX_SAPIENTICA/Simulation/GeographicInformation.hpp>
+#include <PAX_SAPIENTICA/Simulation/SimulationConst.hpp>
 #include <PAX_SAPIENTICA/Type/Vector2.hpp>
 
 namespace paxs {
@@ -37,8 +38,6 @@ namespace paxs {
     public:
         using Vector2 = paxs::Vector2<T>;
 
-        int pixel_size = 256;
-
         using DataVariant = std::variant<Data<std::uint_least8_t>, Data<std::uint_least32_t>, Data<float>>;
         std::unordered_map<std::string, DataVariant> data_map;
 
diff --git a/Library/PAX_SAPIENTICA/Simulation/Human.hpp b/Library/PAX_SAPIENTICA/Simulation/Human.hpp
new file mode 100644
index 000000000..f33f7ff99
--- /dev/null
+++ b/Library/PAX_SAPIENTICA/Simulation/Human.hpp
@@ -0,0 +1,39 @@
+/*##########################################################################################
+
+	PAX SAPIENTICA Library 💀🌿🌏
+
+	[Planning]		2023 As Project
+	[Production]	2023 As Project
+	[Contact Us]	wanotaitei@gmail.com			https://github.com/AsPJT/PAX_SAPIENTICA
+	[License]		Distributed under the CC0 1.0.	https://creativecommons.org/publicdomain/zero/1.0/
+
+##########################################################################################*/
+
+#ifndef PAX_SAPIENTICA_SIMULATION_HUMAN_HPP
+#define PAX_SAPIENTICA_SIMULATION_HUMAN_HPP
+
+/*##########################################################################################
+
+##########################################################################################*/
+
+#include <PAX_SAPIENTICA/Simulation/Human.hpp>
+
+namespace paxs {
+    template <typename T>
+    class Human : public Agent<T> {
+    public:
+        using Vector2 = paxs::Vector2<T>;
+        using Environment = paxs::Environment<T>;
+
+        Human(const std::string& id, const std::string& name, const Vector2& pos, const std::uint_least8_t gen, const std::uint_least8_t age, const std::uint_least8_t life_exp, Environment* env)
+            : Agent<T>(id, name, pos, gen, age, life_exp, env) {}
+
+        bool operator==(const paxs::Human<T>& a) {
+            return  Agent<T>::operator==(a);
+        }
+    protected:
+
+    };
+}
+
+#endif // !PAX_SAPIENTICA_SIMULATION_HUMAN_HPP
\ No newline at end of file
diff --git a/Library/PAX_SAPIENTICA/Simulation/SimulationConst.hpp b/Library/PAX_SAPIENTICA/Simulation/SimulationConst.hpp
new file mode 100644
index 000000000..387bd6a14
--- /dev/null
+++ b/Library/PAX_SAPIENTICA/Simulation/SimulationConst.hpp
@@ -0,0 +1,23 @@
+/*##########################################################################################
+
+	PAX SAPIENTICA Library 💀🌿🌏
+
+	[Planning]		2023 As Project
+	[Production]	2023 As Project
+	[Contact Us]	wanotaitei@gmail.com			https://github.com/AsPJT/PAX_SAPIENTICA
+	[License]		Distributed under the CC0 1.0.	https://creativecommons.org/publicdomain/zero/1.0/
+
+##########################################################################################*/
+
+#ifndef PAX_SAPIENTICA_SIMULATION_SIMULATION_CONST_HPP
+#define PAX_SAPIENTICA_SIMULATION_SIMULATION_CONST_HPP
+
+/*##########################################################################################
+
+##########################################################################################*/
+
+namespace paxs {
+    static int pixel_size = 256;
+}
+
+#endif // !PAX_SAPIENTICA_SIMULATION_SIMULATION_CONST_HPP
\ No newline at end of file
diff --git a/Library/PAX_SAPIENTICA/Simulation/Simulator.hpp b/Library/PAX_SAPIENTICA/Simulation/Simulator.hpp
index ebad8292a..3fd37e44f 100644
--- a/Library/PAX_SAPIENTICA/Simulation/Simulator.hpp
+++ b/Library/PAX_SAPIENTICA/Simulation/Simulator.hpp
@@ -18,6 +18,7 @@
 
 #include <PAX_SAPIENTICA/Simulation/Agent.hpp>
 #include <PAX_SAPIENTICA/Simulation/Environment.hpp>
+#include <PAX_SAPIENTICA/Simulation/SimulationConst.hpp>
 
 namespace paxs {
     template <typename T>
@@ -74,8 +75,8 @@ namespace paxs {
 
         void randomizeAgents(const int agent_count) {
             const Vector2& offset = environment.getEndPosition() - environment.getStartPosition();
-            std::uniform_int_distribution<> x_dist(0, environment.pixel_size * offset.x);
-            std::uniform_int_distribution<> y_dist(0, environment.pixel_size * offset.y);
+            std::uniform_int_distribution<> x_dist(0, pixel_size * offset.x);
+            std::uniform_int_distribution<> y_dist(0, pixel_size * offset.y);
             std::uniform_int_distribution<> age_dist(0, 20);
             std::cout << "Randomizing agents..." << std::endl;
             for(int i = 0;i < agent_count;++i) {