MainForm.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace TotallyNotMalware
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();

            System.Net.WebRequest request = System.Net.WebRequest.Create(
                "https://bocchi.rocks/assets/img/page/character/ryo/main.png"
            );
            System.Net.WebResponse response = request.GetResponse();
            System.IO.Stream responseStream = response.GetResponseStream();
            Bitmap ryo = new Bitmap(responseStream);
            Bitmap resizedRyo = new Bitmap(lordAndSavior.Width, lordAndSavior.Height);
            Graphics g = Graphics.FromImage(resizedRyo);

            Rectangle srcRect = new Rectangle(29, 16, 260, 316);
            Rectangle destRect = new Rectangle(0, 0, lordAndSavior.Width, lordAndSavior.Height);

            g.DrawImage(ryo, destRect, srcRect, GraphicsUnit.Pixel);
            g.Dispose();

            lordAndSavior.Image = resizedRyo;            
        }

        private void btnSubmit_Click(object sender, EventArgs e)
        {
            Hide();
            ThanksForm f = new ThanksForm();
            f.ShowDialog();
            Close();
        }
    }
}