The Kaleidescope is full of tales of heroism, that end with long, grueling, well-earned victories as fate demands it. So then... what of battles that end in one punch? The timeline diverges, with Alaya and Gaia unable to act as the world changes from one of mystics to one with magecraft and monsters. Heroes and monsters shall rise on both sides to save or destroy as fate demands.

Saitama junto con un grupo de héroes, quedan atrapados en un mundo donde también existen los héroes, pero no los monstruos ¿Encontraran la manera de volver o se quedaran para darles lecciones a unos estudiantes de una prestigiosa academia?

Illyasviel von Einzbern did manage to summon a Berserker, but this servant was painfully stubborn and loved to do things with its own way. Soon however, she would learn the reason behind its deviance and its extreme hatred towards other servants.

Saitama and Naruto have been childhood friends and eventually roommates. They've been around one another pretty much at all times. It only seemed logical that it would continue when they stepped into the life of superheroes and monster slayers. While Naruto's power comes from a mystical reincarnation of his former self...Saitama's...well Naruto doesn't really know about that.

As a simple guy, Saitama liked his life even if it was boring as hell. One day, by mistake, he got involved in some interdimensional shit, so now he is in a weird place with thick girls... It wasn't that bad. [MASSIVE HAREM SHIT] [SHITTY COMEDY] [BAD GRAMMAR] Have a nice day.

Our local hero for fun finds himself stranded in the world of Remnant after an accident

For all his heroics, Naruto was glad he wasn't named Friendship Man. His girlfriend would have teased the crap out of him. One thing was for sure, though. Saitama would not be getting peace and quiet anytime soon. Fluff, Romance, Humor, [AU]

Three, Technically Four, End Up In A One Punch World

The Re: Zero world, considered one of the cruelest places that one person can find, every normal person who enters this place leaves traumatized without doubt, however, not for this peculiar man, after all, the entire world will know that you don't traumatize this person, this person is the one who traumatize YOU!, and Lugunica is not prepared. (cover edited by me, image not mine).

Garou es transportado al mundo de The Boys, la serie de televisión, y se enfrentará a los "héroes" en su viaje para convertirse en un monstruo.

King, Flashy Flash, and Amai Mask are brought into a secret facility and are each assigned to undertake a recon mission… in another world! A place where the civilians often resemble mysterious beings, and chaos runs rampant, how will these three heroes fair in such an alien world?

Seven Deadly Sins vs One Punch Man. Just because you don't look tough doesn't mean you are weak. And these gentlemen proved appearance never equals to strength!

Things never go as planned, sometimes there are heroes, sometimes there are villains, and sometimes there are heroes from the future who were raised from a warrior race of aliens, determined to protect the planet they grew up on, even if it's from threats that happened nearly two centuries, before they were born.

King acquires an odd video game from a strange old man. Naturally after turning the game on he is sucked inside inside and into a fantasy world. Even though the world has many traits of anime and manga he's seen, danger still lurks everywhere all the same. The more things change, the more things stay the same, and King's terrible luck continues to follow him wherever he goes.

Momonga is now in the world of One Punch Man will he become a Hero like his friend touch me? or will he be a monster and cause havoc? can he survive? Read and find out

Do you know that feeling when you remember you previous life working for an evil organization in another world but no one believes you? Keep your faith cause perhaps it is true and will save the world you're currently in!

Baki Hanma has a long way to go if he wants to surpass his father, Yujiro Hanma, the strongest creature on Earth, however, that still raises the question. Is he really the strongest or is their someone beyond his strength.

Leerás momentos que no pudieron aparecer en la historia principal de "Un espíritu entre monstruos" y también podrás leer momentos después de que Kurumi volvió a casa.

What If Ainz gets sent to the world of One punch man? Will he become a hero or will he become the god-level Threat Satiama wishes to fight? Read to find out! (I do not own the cover image )

Crossover Italiano tra One Punch Man e Re:Zero. Garo, il noto cacciatore di eroi di One Punch Man viene teletrasportato nel mondo di Re:Zero. Cosa succederà?

What if Saitama from one punch man would participate in ragnarok. Saitama is the last fighter of humanity. Will the strongest man in the world be able to defeat the gods? Will he finally find someone who is as strong as he is?

The last thing Zombieman expected to be doing was helping two girls get back to their own dimensions. Was he even supposed to believe a word they said? Crossover! OPM x Skulduggery Pleasant series x AtLA (Toph). Rated T for OPM-level violence. Please R&R!

Ulquiorra Cifer is reincarnated as Saitama's brother. The most powerful emotionless brothers! One is utterly bored of conventional activities and the other is lacking interest in such activities altogether. What fate lies ahead of Ulquiorra? Now a human with little interest in truly living as one. One… as a Tax Accountant!

Lost on Remnant, The Human Monster awakens in a land of the shattered moon. similar to his home yet different. Now he needs to find his purpose in this new world. Remnant, we have a problem...

Saitama and Genos have dealt with weird things happening to them before, but tumbling into another world after messing with an alien warp drive took the cake. Tensions rise as the powerful duo make ripples in the hero (and villain) society of Japan. How does everyone react? With exasperation and annoyance, of course! (Original title was Unforeseen Circumstances)