Korean messages that you can send Sangdo on his birthday:
생일 축하 해요 - happy birthday
행복한 생일날 되세요!! - have a happy birthday!!
멋진 생일 보내세요! - have an amazing birthday!
모든 소원이 이루어지길 바랍니다! - may all your wishes come true!
오늘같은 특별한 날 행복한 일들이 많이 생기길 바랍니다. - wishing you happiness on your special day
특별한 오늘, 가장 행복했으면 합니다 - wishing you happiness this special day brings
상도 : - sangdo (use if you were born in 1993 or earlier)
상도 야 - sangdo-yah (use if you were born in 1993 or earlier, friendlier way to refer to him)
오빠 - oppa (honorific, use if you are a girl and were born after 1993)
형 - hyung (honorific, use if you are a boy and were born after 1993)
상도 (add honorific if needed: 야, 오빠, 형) 화이팅 - sangdo (yah, oppa, hyung) fighting!
You can pick one message or combine a few. For example, you can add any of the happy birthday messages after any of the other messages: 모든 소원이 이루어지길 바랍니다! 행복한 생일날 되세요!! - may all of your wishes come true! have a happy birthday!!
