You only said " My Grandpa's anime ". That's too little information. I'm not too sure about the specific content. You can tell me what the story of the anime is, what characters it has, and so on. That way, I can recommend it according to my requirements.
Grandfather's grandfather was commonly known as great-grandfather.
No, grandfather is grandfather, and grandfather's father is great-grandfather.
His grandfather's grandfather was commonly known as his great-great-grandfather. There might be other names in different regions, such as great-grandfather, but great-great-grandfather was a more common name for family relations.
His grandfather's grandfather was called great-great-grandfather, and in some areas, he was also called great-grandfather.
His grandfather's grandfather was his great-grandfather. In the traditional order of seniority in China, with oneself as the center, there were great-grandfather, great-grandfather, grandfather, father, and other elders. Grandfather was grandfather, and grandfather's grandfather belonged to the generation of great-grandfather.
Grandpa's father is great-grandfather, and grandpa's grandfather is great-great-grandfather.
"Grandpa's Grandpa's Dad's Nang" was the name of a Nang shop in an alley in the western district of the ancient city of Kashi. This was a naan shop run by the seventh generation. Although the shop was less than ten square meters, it was very unique. The naan in the shop was baked in the traditional way, using firewood. There were nearly ten types of naan, including rose naan, raisin naan, spicy skin naan, walnut naan, etc. The price was reasonable. Other than the spicy skin naan, which was 4 yuan each, the others were 3 yuan each. The interior of the shop was decorated with lanterns, bamboo baskets, gourds, and portraits of white-bearded old men. The shop was bustling with sales. The buns were piled high in round baskets, and tourists would line up to buy them. Outside the shop, there were tourists sitting on wooden stools to taste the freshly baked naang. There were also people sitting on the carpeted kang for leisure and entertainment. Travel tourists would also come here to take photos. There were seven people in the shop, and the business hours were from 9 a.m. to 1 a.m. the next day. They could sell about 2000 naan every day, and they had to distribute about 50 boxes of naan to all over the country every day, 25 in each box. The secret of the booming business of the naan shop was the real materials. A bag of 25 kilograms of flour was matched with at least 120 eggs, 5 kilograms of milk, and 3 kilograms of clear oil. The heat was very important when sticking the naan. In order to achieve standardized production, each naan was weighed to ensure the same weight, and the fillings were carefully selected. This shop had become a place for tourists to check in.
Grandpa's grandfather could be called great-great-grandfather in spoken language. In some areas, there were also people who called him great-grandfather.
His grandfather's grandfather was his great-grandfather, and his great-grandfather's father was his great-grandfather.
A grandfather's grandfather was a great-great-grandfather, and a great-great-grandfather's grandson was a grandfather or a grandfather's brother.