I got is info from crunchyroll forum

Below is one way to find out What your Name is in Korean. Remember that these are just for fun. Don't take them seriously.

I. Surname : Korean surname is the last number in your year of birth.
- 0. Park
- 1. Kim
- 2. Shin
- 3. Choi
- 4. Song
- 5. Kang
- 6. Han
- 7. Lee
- 8. Sung
- 9. Jung

Example: I. 1998 = Sung.

II. Middle name : is your month of birth .
- 1. Yong
- 2. Ji
- 3. Je
- 4. Hye
- 5. Dong
- 6. Sang
- 7. Ha
- 8. Hyo
- 9. Soo
- 10. Eun
- 11. Hyun
- 12. Rae

Example: II. 7 = Ha.

III. Name : is your date of birth.
- 1. Hwa
- 2. Woo
- 3. Joon
- 4. Hee
- 5. Kyo
- 6. Kyung
- 7. Wook
- 8. Jin
- 9. Jae
- 10. Hoon
- 11. Ra
- 12. Bin
- 13. Sun
- 14. Ri
- 15. Soo
- 16. Rim
- 17. Ah
- 18. Ae
- 19. Neul
- 20. Mun
- 21. In
- 22. Mi
- 23. Ki
- 24. Sang
- 25. Byung
- 26. Seok
- 27. Gun
- 28. Yoo
- 29. Sup
- 30. Won
- 31. Sub

Example: III. 20 = Mun. and your name will be - Sung Ha Mun