This is a one to one copy of the actual Egyptian Mythology Tales, even down to the name. The only different is the relationship between the characters.
Sand represent all 4 elements, Hard as Earth, Flexible as Water, Versatility as Air, and Hot as Fire. Basically, the King is a fucking Moron for abandoning him. Imagine sitting in a room with a sand mage and he just decided to send a small amount of Sand into your lungs grain by grain until you...
My prediction is that this whole mess will turn into a massive polycule surround entirely around the MC and Yuu-kun and there won't be any scream of heart broken for the MC.
A full blown Japanese authentic Yakuza in a western looking Fantasy world. Interesting.
Also what are you on about with the translation quality? It's perfectly understandable.
Said the one with the most suspicious comment the entire Thread. 80% of those who throw the pedo card randomly like you turned out to be one so maybe stop talking and cut your losses.