GR-Kaede EEPROM read write issue

is anyone tried to write or read from Gr-Kaede EEPROM, i am facing some problem in that, please suggest..

I am writing single byte and reading back, code work fine just after dump, now if i disconnect and connect board code is not working as intended,

it stucked somewhere in EEPROM.write() routine. Please find the code and output log below -

Sketch/Code :

#include <Arduino.h>
#include "HardwareSerial.h"
#include "EEPROM.h"

void setup()
{
         unsigned char WriteByte=25,ReadByte=0;

         pinMode(PIN_LED0,OUTPUT);
         
         Serial.begin(9600);
        delay(1000);

         Serial.println("Writing...");
         EEPROM.write(0,WriteByte);
         delay(500);

         Serial.print("you wrote : ");
         Serial.println(WriteByte);

         Serial.println("Reading...");
         ReadByte = EEPROM.read(0);
         delay(500);

         Serial.print("you read :");
         Serial.println(ReadByte);

        digitalWrite(PIN_LED0, 1);
}

void loop()
{
    //do nothing
}

Output/Log :

a.)Just after code dump in the board -

Writing...
you wrote : 25
Reading...
you read :25

b.) After disconnect and reconnect board (Power off-on) :

Writing...