I don't think Nacht hates Yami because of who he is, I think he only said that because he hates who Yami reminds him of, which is Nacht's past self that ended up getting his brother killed due to his actions. I think that Yami and William are safe from Death. Yami because he's popular, and William because Rades exists to bring him soul back. Morgen has a deep hatred for unjust evil, as described in Chapter #263, which can also be said of the Dark Triad to a certain extent. In an unfortunate confrontation, the Dark Triad must have killed the original Nacht while Morgen and Yami were away on a mission. The Yami Yami no Mi is a large, round, light purple fruit made up of many small teardrop-shaped components with swirl patterns, and green leaves sprouting from the top. Its overall shape and appearance closely resembles a pineapple or a bunch of oversized and teardrop-shaped grapes. [1] It mildly resembles the Mera Mera no Mi. The vice-captain, Nacht is an extremely gifted magic knight who can manipulate the shadows. By manipulating the shadows, he can immobilize people and restrain people. Furthermore, is also the host of the four devils and has the ability of released them temporarily to the human world. Being the nobleman, he has large magic power. "Captain Yami and I both have work to do, so we can't be together all the time. You know how much there is to do and we all need to help." "I'm sure you will find some time to be alone again soon", Wainsley told her with a wide smile and others nodded in agreement. Yami's Dark Magic lends itself to the technique, similarly to Nacht's Shadow Magic. The most recent Black Clover arc demonstrates this perfectly, showing the synergistic use of Mana Zone with .

why does nacht hate yami