Thank you for your question 🥰
What I love about Malleyuu dynamic?
I…actually I don’t know…I just love everything…
But if I had to give the best answer, it would probably be this: “One support person and another support person.”

I say this because Malleus is nicknamed “sea slug” and Yuu(MC) is “shrimp”. Their nature is "symbiosis"

Sea slugs protect shrimps. The slug is toxic to many creatures, so most predators avoid it - giving the shrimp a wide berth as well. On the contrary, "shrimp" helps "sea slugs" have a clean body. So, Malleus could be the one to help Yuu in terms of strength. Yuu doesn't have it and he can help Yuu when Yuu needs it. And Yuu can be Malleus' emotional support. (Malleus confided in Yuu about his feelings, right? He needs someone he can confide in.)
One is most powerful. One is a normal person. A fae and a child of man. They are opposites. But together, they are a perfect
And I love them for that.

Argh…If possible, I wish my English was good enough to tell a long a long and a long post but…😭😭😭