Katana's manga / #wolf(2)

i really really love this story.. why did i ignore such a wonderful piece of art highly recommended️️ 1000000000/100

Not to exaggerate BUT What just happened?? That's it? i mean love the story, the art and everything in it but i want more..i want to see them happily being together. why in the end they end up in separate ways?? They're both happy and love each other. Can someone tell me?? Pls. i need an answer