diff --git a/.gitignore b/.gitignore
index e25349f..3ecf4df 100644
--- a/.gitignore
+++ b/.gitignore
@@ -264,3 +264,4 @@ logs
 .env
 .swp
 server/Migrations/
+server/Data/
diff --git a/server/DTOs/AuthRequest.cs b/server/DTOs/Auth/AuthRequest.cs
similarity index 100%
rename from server/DTOs/AuthRequest.cs
rename to server/DTOs/Auth/AuthRequest.cs
diff --git a/server/DTOs/AuthResponse.cs b/server/DTOs/Auth/AuthResponse.cs
similarity index 100%
rename from server/DTOs/AuthResponse.cs
rename to server/DTOs/Auth/AuthResponse.cs
diff --git a/server/DTOs/GetUserResponse.cs b/server/DTOs/Auth/GetUserResponse.cs
similarity index 100%
rename from server/DTOs/GetUserResponse.cs
rename to server/DTOs/Auth/GetUserResponse.cs
diff --git a/server/DTOs/KeyValueErrorResponse.cs b/server/DTOs/Auth/KeyValueErrorResponse.cs
similarity index 100%
rename from server/DTOs/KeyValueErrorResponse.cs
rename to server/DTOs/Auth/KeyValueErrorResponse.cs
diff --git a/server/DTOs/PutUserRequest.cs b/server/DTOs/Auth/PutUserRequest.cs
similarity index 100%
rename from server/DTOs/PutUserRequest.cs
rename to server/DTOs/Auth/PutUserRequest.cs
diff --git a/server/Data/Migrations/20230601190207_ (31ec2fe).Designer.cs b/server/Data/Migrations/20230601190207_ (31ec2fe).Designer.cs
deleted file mode 100644
index 8ca58a9..0000000
--- a/server/Data/Migrations/20230601190207_ (31ec2fe).Designer.cs	
+++ /dev/null
@@ -1,66 +0,0 @@
-// <auto-generated />
-using Microsoft.EntityFrameworkCore;
-using Microsoft.EntityFrameworkCore.Infrastructure;
-using Microsoft.EntityFrameworkCore.Migrations;
-using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
-using server;
-
-#nullable disable
-
-namespace server.Data.Migrations
-{
-    [DbContext(typeof(ApplicationDbContext))]
-    [Migration("20230601190207_ (31ec2fe)")]
-    partial class _31ec2fe
-    {
-        /// <inheritdoc />
-        protected override void BuildTargetModel(ModelBuilder modelBuilder)
-        {
-#pragma warning disable 612, 618
-            modelBuilder.HasAnnotation("ProductVersion", "7.0.5");
-
-            modelBuilder.Entity("server.Entities.UserEntity", b =>
-                {
-                    b.Property<long>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("INTEGER");
-
-                    b.Property<string>("Birth")
-                        .IsRequired()
-                        .HasColumnType("TEXT");
-
-                    b.Property<string>("Email")
-                        .IsRequired()
-                        .HasColumnType("TEXT");
-
-                    b.Property<long>("Level")
-                        .HasColumnType("INTEGER");
-
-                    b.Property<string>("Password")
-                        .IsRequired()
-                        .HasColumnType("TEXT");
-
-                    b.Property<string>("Phone")
-                        .IsRequired()
-                        .HasColumnType("TEXT");
-
-                    b.Property<string>("ProfileURL")
-                        .HasColumnType("TEXT");
-
-                    b.Property<string>("Sns")
-                        .IsRequired()
-                        .HasColumnType("TEXT");
-
-                    b.Property<string>("Username")
-                        .IsRequired()
-                        .HasMaxLength(20)
-                        .HasColumnType("TEXT");
-
-                    b.HasKey("Id");
-
-                    b.ToTable("Users");
-                });
-#pragma warning restore 612, 618
-        }
-    }
-}
diff --git a/server/Data/Migrations/20230601190207_ (31ec2fe).cs b/server/Data/Migrations/20230601190207_ (31ec2fe).cs
deleted file mode 100644
index 52b1a64..0000000
--- a/server/Data/Migrations/20230601190207_ (31ec2fe).cs	
+++ /dev/null
@@ -1,41 +0,0 @@
-using Microsoft.EntityFrameworkCore.Migrations;
-
-#nullable disable
-
-namespace server.Data.Migrations
-{
-    /// <inheritdoc />
-    public partial class _31ec2fe : Migration
-    {
-        /// <inheritdoc />
-        protected override void Up(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.CreateTable(
-                name: "Users",
-                columns: table => new
-                {
-                    Id = table.Column<long>(type: "INTEGER", nullable: false)
-                        .Annotation("Sqlite:Autoincrement", true),
-                    Email = table.Column<string>(type: "TEXT", nullable: false),
-                    Password = table.Column<string>(type: "TEXT", nullable: false),
-                    Username = table.Column<string>(type: "TEXT", maxLength: 20, nullable: false),
-                    Phone = table.Column<string>(type: "TEXT", nullable: false),
-                    Birth = table.Column<string>(type: "TEXT", nullable: false),
-                    ProfileURL = table.Column<string>(type: "TEXT", nullable: true),
-                    Level = table.Column<long>(type: "INTEGER", nullable: false),
-                    Sns = table.Column<string>(type: "TEXT", nullable: false)
-                },
-                constraints: table =>
-                {
-                    table.PrimaryKey("PK_Users", x => x.Id);
-                });
-        }
-
-        /// <inheritdoc />
-        protected override void Down(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.DropTable(
-                name: "Users");
-        }
-    }
-}
diff --git a/server/Data/Migrations/ApplicationDbContextModelSnapshot.cs b/server/Data/Migrations/ApplicationDbContextModelSnapshot.cs
deleted file mode 100644
index cd2dd1e..0000000
--- a/server/Data/Migrations/ApplicationDbContextModelSnapshot.cs
+++ /dev/null
@@ -1,63 +0,0 @@
-// <auto-generated />
-using Microsoft.EntityFrameworkCore;
-using Microsoft.EntityFrameworkCore.Infrastructure;
-using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
-using server;
-
-#nullable disable
-
-namespace server.Data.Migrations
-{
-    [DbContext(typeof(ApplicationDbContext))]
-    partial class ApplicationDbContextModelSnapshot : ModelSnapshot
-    {
-        protected override void BuildModel(ModelBuilder modelBuilder)
-        {
-#pragma warning disable 612, 618
-            modelBuilder.HasAnnotation("ProductVersion", "7.0.5");
-
-            modelBuilder.Entity("server.Entities.UserEntity", b =>
-                {
-                    b.Property<long>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("INTEGER");
-
-                    b.Property<string>("Birth")
-                        .IsRequired()
-                        .HasColumnType("TEXT");
-
-                    b.Property<string>("Email")
-                        .IsRequired()
-                        .HasColumnType("TEXT");
-
-                    b.Property<long>("Level")
-                        .HasColumnType("INTEGER");
-
-                    b.Property<string>("Password")
-                        .IsRequired()
-                        .HasColumnType("TEXT");
-
-                    b.Property<string>("Phone")
-                        .IsRequired()
-                        .HasColumnType("TEXT");
-
-                    b.Property<string>("ProfileURL")
-                        .HasColumnType("TEXT");
-
-                    b.Property<string>("Sns")
-                        .IsRequired()
-                        .HasColumnType("TEXT");
-
-                    b.Property<string>("Username")
-                        .IsRequired()
-                        .HasMaxLength(20)
-                        .HasColumnType("TEXT");
-
-                    b.HasKey("Id");
-
-                    b.ToTable("Users");
-                });
-#pragma warning restore 612, 618
-        }
-    }
-}
diff --git a/server/Services/AuthService.cs b/server/Services/AuthService.cs
index 9991db3..2692eeb 100644
--- a/server/Services/AuthService.cs
+++ b/server/Services/AuthService.cs
@@ -1,4 +1,4 @@
-using System.IdentityModel.Tokens.Jwt;
+using System.IdentityModel.Tokens.Jwt;
 using System.Security.Claims;
 using System.Text;
 using Microsoft.IdentityModel.Tokens;
@@ -8,7 +8,7 @@ namespace server.Services;
 
 public class AuthService
 {
-    private readonly ApplicationDbContext mContext;
+    private readonly ApplicationDbContext _context;
     private static readonly string SECRET;
 
     static AuthService()
@@ -18,7 +18,7 @@ static AuthService()
 
     public AuthService(ApplicationDbContext context)
     {
-        mContext = context;
+        _context = context;
     }
 
     public UserEntity? UserAuthorize(string email, string password)
@@ -27,7 +27,7 @@ public AuthService(ApplicationDbContext context)
         userEntity.Email = email;
         userEntity.Password = password;
 
-        UserEntity[] results = mContext.Users.Where(
+        UserEntity[] results = _context.Users.Where(
             userEntity => (userEntity.Email == email) && (userEntity.Password == password)
         ).ToArray();
 
diff --git a/server/Services/ChatHttpService.cs b/server/Services/ChatHttpService.cs
index 28f1d73..f32ce6a 100644
--- a/server/Services/ChatHttpService.cs
+++ b/server/Services/ChatHttpService.cs
@@ -4,10 +4,10 @@ namespace server.Services;
 
 public class ChatHttpService : IChatHttpService
 {
-    private readonly ApplicationDbContext mContext;
+    private readonly ApplicationDbContext _context;
 
     public ChatHttpService(ApplicationDbContext context)
     {
-        mContext = context;
+        _context = context;
     }
 }
diff --git a/server/Services/UserService.cs b/server/Services/UserService.cs
index ae68978..f60e9a1 100644
--- a/server/Services/UserService.cs
+++ b/server/Services/UserService.cs
@@ -6,15 +6,15 @@ namespace server.Services;
 
 public class UserService : IUserService
 {
-    private readonly ApplicationDbContext mContext;
+    private readonly ApplicationDbContext _context;
 
     public UserService(ApplicationDbContext context)
     {
-        mContext = context;
+        _context = context;
     }
     private bool UserEntityExists(long id)
     {
-        return (mContext.Users?.Any(e => e.Id == id)).GetValueOrDefault();
+        return (_context.Users?.Any(e => e.Id == id)).GetValueOrDefault();
     }
 
     public GetUserResponse Create()
@@ -24,7 +24,7 @@ public GetUserResponse Create()
 
     public async Task<GetUserResponse?> Read(long id)
     {
-        UserEntity? user = await this.mContext.Users.FindAsync(id);
+        UserEntity? user = await this._context.Users.FindAsync(id);
 
         if (user == null)
         {
@@ -46,7 +46,7 @@ public GetUserResponse Create()
 
     public async Task<bool> Update(long id, PutUserRequest model)
     {
-        UserEntity? user = await this.mContext.Users.FindAsync(id);
+        UserEntity? user = await this._context.Users.FindAsync(id);
 
         if (user == null)
         {
@@ -58,21 +58,21 @@ public async Task<bool> Update(long id, PutUserRequest model)
         user.Phone = model.phone ?? user.Phone;
         user.Birth = model.birth ?? user.Birth;
 
-        await mContext.SaveChangesAsync();
+        await _context.SaveChangesAsync();
 
         return true;
     }
 
     public async Task Delete(long id)
     {
-        UserEntity? user = await mContext.Users.FindAsync(id);
+        UserEntity? user = await _context.Users.FindAsync(id);
 
         if (user == null)
         {
             throw new Exception("The user with that ID does not exist.");
         }
 
-        mContext.Users.Remove(user);
-        await mContext.SaveChangesAsync();
+        _context.Users.Remove(user);
+        await _context.SaveChangesAsync();
     }
 }
diff --git a/server/server.csproj b/server/server.csproj
index 2612b7c..a74870f 100644
--- a/server/server.csproj
+++ b/server/server.csproj
@@ -35,6 +35,7 @@
     <None Remove="Middlewares\" />
   </ItemGroup>
   <ItemGroup>
+    <Folder Include="DTOs\Chat\" />
     <Folder Include="Utilities\" />
     <Folder Include="Attributes\" />
     <Folder Include="Middlewares\" />