Buddha by Tezuka Osamu

Siddhartha is born as the eldest son of the King Suddhodana of Shakya of Kapilavastu, the country located at the foot of the Himalayas. But he is raised by his aunt Pajapati since his mother died on his 7th day of life. He gets married to Yashodara at the age of sixteen and becomes a father. The son is named Rahula. But Siddhartha comes to think of a life-and-death issue, the very underlying theme of life. At the age of 29, he becomes a priest, leaving everything behind him. Later he achieves enlightenment under the lime tree. After then he identifies himself as Buddha, traveling around in India to preach people.