One common theme is morality. For example, in 'Fullmetal Alchemist: Brotherhood', the concept of equivalent exchange is a central moral idea. Characters often face difficult choices that test their sense of right and wrong, especially in relation to the use of alchemy which can have dark consequences if misused.
Well, sometimes it could be a reward for solving a complex puzzle or as a gift from a mysterious ally. It really depends on the specific anime story's rules and plot.
I would recommend 'Berserk'. It has some very dark and detailed black and white art. The story follows Guts, a lone swordsman, in a world filled with demons and dark magic. There are witch - like characters and the overall art style, especially in the manga, enhances the sense of doom and gloom. The black and white drawings are extremely detailed, making the battles and the nightmarish creatures look even more terrifying.
The main characters are Asta, a boy with no magic but great determination; Yuno, Asta's rival who is extremely talented in magic; and Noelle Silva, a member of the Silva family who has trouble controlling her powerful water magic at first. There are also characters like the captain of the Black Bulls, Yami Sukehiro.
The main plot of Black Clover anime story is about Asta, a boy born without magic in a world where magic is everything. He dreams of becoming the Wizard King. Along with his friends in the Black Bulls squad, he goes on various quests, battles against powerful enemies, and overcomes many challenges to prove that even without traditional magic, he can be a great magic knight.
The 'black steel anime story' could potentially be about a world where black steel has some special significance. Maybe it's a key material in a post - apocalyptic setting, used to build weapons or fortresses. Or perhaps it has some magical properties in a fantasy - based anime. Without more information, it's hard to say precisely what the story is about.
One possible main theme could be strength. Since black steel is often associated with something tough and durable, the story might revolve around characters seeking strength through the black steel, either physically or in terms of power within their society.
The two main characters are Ciel Phantomhive and Sebastian Michaelis. Ciel is the young earl who is seeking revenge. Sebastian is the demon butler who has made a contract with Ciel. He is extremely powerful and efficient in serving Ciel, but also has his own motives which are tied to the contract.
The main plot of 'Black Butler' follows Ciel Phantomhive, a young noble in Victorian England. After his parents' death, he makes a contract with a demon, Sebastian Michaelis. Ciel, as the Queen's Guard Dog, has to solve various mysteries and crimes in the underworld while Sebastian protects him and aids in his revenge plans against those who wronged him. It's a story full of dark secrets, supernatural elements, and complex characters.