Why does Boruto have a diamond on his hand?

Related questions

1. Will Boruto be a jinchuriki?
2. Are runners happier?
3. Does running with weights help?
4. Is Naruto coming back?
5. Does running like Naruto make you faster?
6. Is it OK to run with a weighted vest?
7. Why does running make you poop?
8. Does Naruto become stronger than Naruto?
9. Will Boruto have a son?
10. Why did they kill Neji?

Tags

1. #chakra
2. #sasuke
3. #indicates
4. #during
5. #flowing
6. #marks
7. #answers
8. #shippuden
9. #their
10. #otsutsuki
11. #palms
12. #boruto
13. #paths
14. #symbol
15. #inside
16. #naruto
17. #could
18. #known