Kuro no Maou - Chapter 509

Our straight (?) bottom woke up ten years into the future and found himself on the bed of his childhood friend… At the start, the bottom was shocked to his very bones, but he soon quickly accepted this premise and found the whole situation to be rather amusing. Precisely then, the bottom once again went back to his timeline — back to when he and the top were just platonic childhood friends.

A man reincarnates in the body of a boy who suffered a tragedy, only to realize that he is in the world of My Hero Academia. What's even stranger is that his quirk seems to have the abilities of Nen and Haki.

How long can one ignore the voices in their head?Nine years. To Mark, that was the limit.For the majority of his life, Mark White has been fighting a constant battle for his sanity. The voices in his head pushed him toward madness one whisper at a time, and the music he used to ward against them was gradually losing its effects.As his mental state slowly deteriorated, Mark spent more of his time working on a game he had been developing and lamenting his lack of romantic experience.One night, the voices dealt him a powerful blow, bringing their battle to an end. To his surprise, Mark won the battle, but that came at a great cost.The voices might have disappeared, but a visual hallucination arrived to replace them, taking the form of a character from his game: Maids VS Apocalypse. Little did he know that the real apocalypse was already coming for him.

Until he became the lowest-ranked master, his lonely and luckless life never changed.Suddenly one day, a descendant injected him with a nanomachine, and the machine started ‘speaking’ to him.[I am the seventh generation Nanomachine manufactured by Sky Cooperation, and I am operating as a central nerve connected to your brain.]“What? What are you talking about?”This was beyond the boy’s knowledge, he turned pale.The Nanomachine linked to his cerebrum realized the User was not understanding a single word it said.“Who are you, and why are you doing this to me?”[“I am the seventh generation Nanomachine.]“Nano Machine?”[Yes, Nanomachine.]The boy’s face hardened.Mashin was the deity the Mashin Religion worshipped, along with the Sacred Fire.The religions’ Master communicated with Mashin.“Um, are you really Mashin?”The boy knelt down and asked with a trembling voice. At this, the Nanomachine attached to his cerebrum realized it had been misunderstood.