Which country should a traveler follow in determining the start of fasting when there is a difference in moon sighting between the country of residence and the country of travel?

Muslims in Japan must form a Sharia committee to investigate the sighting of the crescent moon. If they are unable to do so, they should fast based on the sighting in the nearest Muslim country. As for someone who travels from a country where they started fasting to another country, they should follow the new country in terms of fasting and breaking the fast. So, if you travel from Japan to Egypt, break your fast with the people of Egypt. If you have fasted less than 29 days, make up one day, because a month cannot be shorter than that.