I've noticed on this anime and manga this two out of all people in black clover doesn't have a surname the author must come up of the origin of this two because it is what it lacks in the story. because all of great anime and manga characters have a surname except this two this is an acceptable without surname why put all characters a surname in black clover if this two main characters doesn't have one this is unfitting for this anime and manga. Naruto has surname Uzumaki, Natsu has surname Dragneel, Yusuke has surname Urameshi, even ikki has a complete name itsuki minami. why no surname?