Wait, the hero in the manga with the black magician (phoenix was the name of the hero i think?) Was nice.
The black magician left on his own because of the hero's shitty 1 teammate and he had his own reasons.
I mean the hero's party had a reasonable point and were pretty subtle about it, but 1 was just a total shitty jerk.
Plus the MC had secrets he can't tell anybody and only the demon king's people and Phoenix knows, so the hero understands as well and doesn't force the MC.
I just hope MC and the hero in this manga and (the manga I'm mentioning for I forgot the title) will be still friends after all is said and done cause they seem like good guys you know.
I have to say that at least the Hero in this manga is a nice guy (for now) unlike other Heroes in a "Kicked out of the party" mangas