Doraemon 1979

Ten-year-old Nobita Nobi, a Japanese schoolboy, is friendly and trustworthy but also slow, unlucky, weak, struggles academically, and isn't very good at sports. One day, Nobita's descendants send Doraemon, a robot cat from the year 221, back in time to take care of Nobita so that his descendants can live happier lives. To help Nobita whenever he encounters a challenge, Doraemon keeps tools, inventions, and devices from the future in a four-dimensional bag. Despite being a cat robot, Doraemon is afraid of mice since one time a mouse-robot bit off one of his ears. Because of his melancholy, Doraemon's initial yellow color changed to blue. Takeshi Goda, also known as Gian, Suneo Honekawa, Gian's sidekick, and Shizuka Minamoto, Nobita's best friend and love interest, make up the trio of pals who are most important to him. Gian is a powerful, charismatic, and domineering young man who is also devoted to his friends. A rich and snobbish boy named Suneo leverages his friendship with Gian to get the favor of his fellow students. Shizuka is a sweet and caring young lady who plays with Nobita quite a bit. Shizuka, who is Nobita's future wife and initially Gian's younger sister, is the object of his crush. Despite being Nobita's friends, Gian and Suneo frequently mistreat and bully him. Nobita often uses Doraemon's tools to fight back against them, but he has a propensity to misuse them (or Gian and Suneo if they take them away), which frequently has unintended effects for him and other people.