@Fei
here is what i have found:
"Shodaime and Nidaime were actually brothers! Sixty years ago, Shodaime led a group of shinobi to this lush forestland and found the Hidden Leaf Village. Unfortunately during that chaotic era, he passed away shortly after the creation of the village. Nidaime inherited his older brother's will and was responsible for the creation of the ninja academy and others organizations within the village. The great ninja war broke out afterwards; in his dying moment, Nidaime instructed the future generation to pacify the war and ensure the village's prosperity."
killed in battle?? anyway the quote above seems fictitious to me. i will tell why later when i have time. FYI DB is not considered canon, its secondary and sometimes has contradictory stuff. bizarre stat. sometimes kishi writes stuff just for the sake of writing and fun. for example he wrote in DB 3, pain had all those piercings just to feel more pain.
Pain: "I wanted coolness and danger"
"He's Akatsuki's leader, so he has to look cool at least to a certain extent, but I also wanted him to look dangerous. Since his name is "Pain", I decided to put some piercings on his body. Kind of like a person who gives pain to himself".
DB is not to be taken seriously. only manga is considered canon.