Fantasy Bishoujo Juniku Ojisan to (Life with an Ordinary Guy Who Reincarnated into a Total Fantasy Knockout) is is a Japanese manga written by Yū Tsurusaki and illustrated by Shin Ikezawa.
An anime TV series adaptation by OLM premiered in January 2022.
The series is an isekai romantic comedy between an old guy and someone who used to be an old guy.
It’s honestly one of the kind anime and I have never seen anything like that.
While I know that it’s isekai, it’s more focused on the relationship between the main protagonists and their interactions than the actual plot or setting. Or at least that’s the feeling I had while I watched the first four episodes.
All of the anime series mentioned below are similar to Fantasy Bishoujo Juniku Ojisan to.
10. How Not to Summon a Demon Lord
Another comedic isekai that’s similar to Fantasy Bishoujo Juniku Ojisan to is How Not to Summon a Demon Lord.
Takuma Sakamoto is a shut-in gamer who is unmatched in an MMORPG game called Cross Reverie, having a gaming identity of the Demon King Diablo.
One day, he ends up summoned to a fantasy world with the appearance of the Demon King from Cross Reverie. The two beautiful ladies who summoned him then try to perform an Enslavement Ritual that backfires and the two become his slaves instead. After getting to know them a little, he decides to accompany them on a journey to unbind the slave contract.
9. Tsukimichi: Moonlit Fantasy
In Tsukimichi: Moonlit Fantasy, a young boy is forcefully transported to another world but instead of becoming a hero from the start, the crappy goddess strips him of the role of a hero and drops him at the edge of her world!
In both shows, we have a cheeky goddess that makes it difficult for the protagonist who was transported to the fantasy world. In a nutshell, both series are funny isekai comedies.
8. That Time I Got Reincarnated as a Slime
An average 37-year-old corporate worker dies after being stabbed to death by a passing robber and reincarnates as a genderless slime in a fantasy world.
They are both mostly light-hearted shows, and the protagonists don’t take themselves too seriously most of the time. They both have absurd moments that make you laugh out loud, and they both throw some unexpected things your way. The protagonists both end up changing their form (or gender) in one way or another and need to adapt to their new lives.
7. Cheeky Angel
At the age of nine, Megumi is an aggressive boy prone to always fighting.
One day, he saves a strange man from a gang of other children. In return, Megumi receives a magical book. After accidentally bleeding on the book, a genie named Pierrot appears and offers to grant him a wish. Megumi wishes to become a strong man’s man. Pierrot, a trickster, inadvertently turns Megumi into a woman. Megumi, furious, throws the book into the riverbank. Believing the only way to reverse the spell is to retrieve the book, Megumi begins a 6-year-long search but is told that she can find the book if she attends Furinkan High School.
(Source: Wikipedia)
The main gist of the series is rather similar—a guy turns into a cute girl and in both cases is treated as “curses”. To top it off, the rival (or the friend in the case of Fantasy Bishoujo) starts developing feelings and attraction towards this “new girl”.
6. Cautious Hero: The Hero Is Overpowered but Overly Cautious
Cautious Hero: The Hero Is Overpowered but Overly Cautious is an isekai anime in which the main hero is transported to another world in order to save it from demons.
Both shows are comedic isekai with adventure sprinkled in it, and the protagonist is summoned to another world with the mission to save the world by defeating the demon lord.
5. My Next Life as a Villainess: All Routes Lead to Doom!
A young girl accidentally bumps her head and regains memories of her past life as an otaku. She quickly realizes that she was reborn in the world of Fortune Lover—one of the games she had used to play! Unfortunately, the character she was reincarnated into is the game’s main antagonist!
Both anime series are rom-com fantasies with characters transported from the real world to the fantasy one. There is a fair share of comedy, romance, and wholesomeness in both.
4. The Fruit of Evolution: Before I Knew It, My Life Had It Made
One day, a whole school full of students gets transported to a mysterious fantasy world with an RPG system.
One of them is Seiichi Hiragi, a high schooler bullied to hell and back for being fat and ugly. While everyone else was transported in groups, he was the only one secluded which caused him to end up in a different location. When he accidentally eats “the Fruit of Evolution,” his life as a successful champion begins!
So we have another rom-com isekai with a guy who undergoes a physical transformation and that changes his life completely. His romantic interest in this new world is a gorilla, and she transforms into an actual human hottie, so it’s similar to Fantasy Bishoujo Juniku Ojisan to with the physical changes.
RELATED: 7 Anime Like The Fruit of Evolution
3. KonoSuba
In KonoSuba, a teen boy dies a shameful death and is brought before the goddess Aqua who offers him a new life with his memory intact. However, there is one catch—he will be reincarnated in a magical world with the task of defeating the demon lord!
Both series are comedic isekai that don’t take themselves too seriously. They have quirky characters, ridiculous, over-the-top scenes, and a rather unique goddess! Also, the goal is to defeat the demon lord in both shows.
2. She Professed Herself Pupil of the Wise Man
A young boy gets isekai’d to the online video game called Arch Earth Online and customizes his game character to look like a young woman. Since he was previously one of the game’s nine great sages, he now tries to convince the people of the game world that he is his pupil.
Both shows are comedic isekai with a guy who ended up transported to a fantasy world as a beautiful young girl.
1. Kaguya-sama: Love is War
Two top-ranked student council representatives, Miyuki Shirogane and Kaguya Shinomya, are both respected by their peers for their grades and elegance.
This duo could be considered a perfect couple, but even though they have developed feelings for each other they are also both determined to manipulate the other party to confess their feelings first and win the love war they have started.
This one is obviously the most similar show to Fantasy Bishoujo Juniku Ojisan to. The main couple plays mind games” and is not really honest about their feelings so we see their real selves & feelings only in their internal monologues, which are quite funny. Despite being clearly attracted/In love with each other, both parties refuse to acknowledge or show it. Both are hilarious romantic comedies, the only difference is that they are set in a completely different setting.
