Doraemon birthday

One day doreamon was thinking about his birth what is the matter when he was very happy when he is borned . he was checking in his pocket his all gadgets was here and then Nobita come and pick a capsule type structure and then Doraemon red don't touch it it is SOS capsule it is used for sending the gift or other thing to old or future . Nobita said I sent a picture of you and a letter when you born and he send it . Suddenly doreamon said don't send it because if I know I had no ears and I am blue coloured and fat so my colour became black ,purple and gray . Then they remove the photo . Then they know why Doraemon was happy in his birth because of Nobita's letter .