夜露死苦
よ
ろ
し
く
Meanings
1
best regards; please treat me well
Slangy ateji pun on 宜しく, originally used by young bike-riding delinquents; now often jocular. Carries the same meaning as 宜しく (sense 2) but with a deliberately rough or playful tone.
See also: よろしく
Yoroshiku! I'm counting on you from now on, man.
He made us laugh by writing '夜露死苦' at the end of his message.