Living his life as a typical corporate worker, Satoru Mikami falls victim to a random stabbing and dies. When he opens his eyes, he is no longer the old him. He realizes that he has been sent into a new world not as a human being but as a slime. As if his unlucky situation isn’t enough, the first living thing he meets is a very powerful dragon. He, however, manages to negotiate with the dragon and obtains its power. With no certain goal in mind, Satoru, now Rimuru, sets off to explore the world he now lives in.

The protagonists from both series are overpowered and are living their lives in a new world. While Makoto is innately powerful, Rimuru only gets his peerless power after consuming Veldora Tempest, the dragon. Both characters, however, can easily give their opponents a run for their money. The similarities don’t end there. For one, one of their earliest encounters is a dragon, which they both manage to reel into their entourage. Another is that both protagonists are deemed as demons by humans for having an insane amount of power. Finally, both series feature the main characters building their own town as their community grows larger. If you somehow still haven't watched That Time I Got Reincarnated as a Slime but enjoy Moonlit Fantasy, you should give it a try.

During a seemingly normal school day, a catastrophe strikes Kumoko’s school. It’s so bad that everyone present is killed. Some, however, are lucky enough to be reincarnated into a fantasy world. They are reborn as nobles, princes, and the like. There is an unfortunate sod that’s unfortunately reborn as a monster spider, Kumoko. Now living in a dungeon filled with beasts and monsters, Kumoko struggles to survive. In order to survive, however, she has to get stronger. With the hopes that her hard work will be rewarded in the future, she continues to grind and fight her way to safety.

Being transported to a new world without their prior knowledge and ending up in situations they definitely didn’t hope for, both main characters can only rely on themselves for survival. Even though that may sound kind of grim, they both manage to adapt fairly well. The main characters may be quite overpowered compared to other denizens of that world, but they both have their struggles. For example, both of them can only speak the language of monsters. Both series also include lots of funny scenes and tons of action.

After dying in a traffic accident in an attempt to save a girl, Kazuma Saitou sees the end of his monotonous life of gaming. The sadder thing is that he later learns that the girl would still have been perfectly safe should he remain still. Being given a second chance at life, Kazuma meets a goddess who tells him he will be transferred to a new world as a hero. As a gift, she grants him a chance to take one thing along with him. Without any hesitation, he tells her that the thing he wants is her. Thus, his (mis)adventures with her start.

Struggling with the basic necessities, Makoto and Kazuma get plunged into hilarious situations. Both main characters are forced to adapt to their current situations with minimal help. Eventually, they are able to secure their basic needs and actually start adventuring. During their travels, both protagonists also manage to build their own harems. Funnily enough, both series also have multiple quirky but also highly capable heroines. They often cause troubles for the main character, but nothing that can’t be fixed after a bit–or maybe a lot–of problem solving.

It was a typical school day when 17-year-old Hajime Nagumo along with his class gets summoned to a new world. His classmates have gained enviable skills worthy of praise, but Nagumo only receives an inferior transmutation skill. Not really the popular and friendly one in the class, his classmates continue to bully him even in this new world. During an exploration, one of his classmates purposely pushed him to his death. He plummets to a bottomless abyss but somehow manages to survive. Faced with an impending doom and menacing monsters, Nagumo falls to desperation and goes mad. Attaining new power, escapes the dungeon stronger than ever before.

As sad as it is, the greatest similarity between Tsukimichi -Moonlit Fantasy- and Arifureta: From Commonplace to World's Strongest is the fact that both main characters are betrayed early on. They’re both brazenly abandoned and thrown to the deepest hell. Because of that, they have to fend for themselves with little knowledge and equipment. Not only that, both protagonists also meet a very strong monster early on, who later becomes their very first aide. While Makoto takes the merciful and lighthearted path, Nagumo treads the darker and vengeful road. Even though he doesn’t necessarily become a heartless killer, there is no way Nagumo is forgiving those who betrayed him after an apology or two.

Dying before his intended time, Touya Mochiuzuki gets transported to a new world. This is God's compensation to him for taking his life way before it should have been taken. He’s also given a chance to take something to aid his journey. Of all the things, he chooses his smartphone. As a kind gesture, God also gives him mastery over all elemental magic. Because of that, he becomes overpowered right off the bat.

Perhaps one of the greatest benefits of being overpowered is being able to live leisurely despite the dangers the world poses. Makoto proves this by easily disposing of enemies and threats with the help of his equally overpowered companions. Similarly, there is almost no threat to Touya’s life as he ventures into this new world thanks to his smarts and skills. This results in both main characters having rather smooth and pleasant travels as they roam around exploring what their new world has to offer. Picking up new companions along the way is just an added bonus.

Supposedly the last day of the renowned game Yggdrasil, player Momonga sees the game through to the end. As one of the loyal players, he sits through the countdown until the servers are shut down. When it does, Momonga doesn’t get logged out. Instead, he now lives as his very own character. Not only that, the NPCs, which they have created, now have wills of their own.

Although Overlord is undeniably a dark isekai series, it shares a few similarities with Moonlit Fantasy. For one, both Momonga and Makoto have overpowered monster subordinates. They’re not only powerful, but some also have similar quirks. Mio and Albedo harbour the same level of longing for their masters, while Tomoe and Demiurge share the mysterious but cunning personality. Another similarity is that both protagonists build and fortify their bases. With the help of their subordinates, they continue to expand their territories in their own ways. Finally, both series know when to be serious and when to be humorous, creating a perfect balance between the two.