Perennial Species


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A species that has the ability to hunt mutants, a perennial species.

One day, they suddenly find themselves isolated in Naraka, a place of torment. Seowoon was once highly ranked in his species and known for his excellent combat capabilities, but he lost all of those abilities after being secluded in the Naraka. Instead, he gained the ability to detect the emergence of mutants through the “Messenger”.

To escape Naraka, they need a Wu Ore, a by-product of the mutants, but Seowoon can’t even get close to mutants without being killed. Upon learning the truth, Cahaya makes a proposal to Seowoon.

“From now on, let’s work together, be my mutant notifier”.

With Cahaya’s help, he is able to travel back and forth to Seoul, but Seowoon finds it more and more difficult.

“Why did I push you away…….”

He just wants to deny the feelings that draw him towards Cahaya.

Associated Names
One entry per line
Endemic Species
Late Blooming Species
Related Series
Nox (1)
Wax Doll Explosion Academy (1)
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Latest Release

Date Group Release
03/03/24 Bleak Ruby c35
03/01/24 Bleak Ruby c34
02/28/24 Bleak Ruby c33
02/26/24 Bleak Ruby c32
02/24/24 Bleak Ruby c31
02/22/24 Bleak Ruby c30
02/20/24 Bleak Ruby c29
02/18/24 Bleak Ruby c28
02/16/24 Bleak Ruby c27
02/14/24 Bleak Ruby c26
02/12/24 Bleak Ruby c25
02/12/24 Bleak Ruby c24
09/14/23 Salmon Latte Translations c23
02/12/24 Bleak Ruby c23
09/11/23 Salmon Latte Translations c22
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3 Reviews sorted by

New cutekittensmeow rated it
February 26, 2024
Status: c32
The world of this novel is beautifully crafted and the characters remind me of people I know. It feels incredibly real. Normally, when you read fantasy novels and comics you spend a lot of your time suspending your disbelief and overlooking how shallow the characters and world is, but this novel is incredibly immersive. Even the fantasy elements are beautifully depicted.

One of the best things about it is there's nothing that feels like an exposition dump, you're just thrown into the world and learn as the story progresses without being... more>> left wondering what's happening. You slowly learn about the world as the MC interacts with it in a way that isn't overwhelming or boring.

The romance is also very slow and leaves you wanting more. It's very obvious both the ML and MC are in love but they both deny their feelings and insist they're straight. Normally I find this very frustrating, but it's pretty cute in this novel because their interactions feel so real and not forced.

I really want this to be turned into a manhwa but I want one of the shounen artists to draw it so the action and fantasy elements are drawn as beautifully as they're written. This would be a perfect young adult action fantasy novel that's more popular than most if it wasn't yaoi, but I'm very happy it's yaoi! <<less
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mochipoodle rated it
July 23, 2023
Status: Completed
One of the best BL novel I've ever read, and I'm not even joking. The worldview is MASSIVE and full of plot twists that will keep you immersed in the story. From the beginning to the end, there is no boring part at all. Not to mention, the dialogues are fun and the characters are charming. You can pretty much trust Chaepali-nim's skills in telling stories—it's otherworldly.
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seekingsnow rated it
September 4, 2023
Status: Completed
This is one of my favourite BL novels, so I highly recommend it! My rating is 5/5.

Beware, my review will contain spoilers!! I won't use spoiler bars unless it's a really major spoiler, so don't read if you don't want to get spoiled!!

Mansaengjong/Perennial Species/Late-born Species is set in an apocalyptic-like world with various mutants and gates. Here, awakened people who can use a power called 'cosmos' are known as 'Mansaengjong', and they are mostly responsible for hunting these mutants. One day, all Mansaengjong are transported to an unknown place called... more>> 'Naraka', and Cha Seowoon, the shou of this work, discovers that he has lost all his abilities and is no longer a top-ranking Mansaengjong. Fortunately, he gains a new ability known as 'Messenger', which lets him detect mutants in advance, and so he is able to survive in Naraka. Eventually he reunites with Cahaya, the gong of this work and another top-ranking Mansaengjong, who invites him back into the Fallen Angels guild which he was once the vice-guild leader of.

First, let's introduce our main characters: Cha Seowoon, our guild leader and elephant shrew; and Cahaya, the strongest alien and hair-chewing maniac!

Both of them are really amazing and likeable characters. Seowoon may appear weak at first, but he is definitely not weak! No matter what, he is the guild leader of Fallen Angels and is reliable and responsible (unlike a certain cringe alien =_=). He is a character who grows as the novel continues, so even if you might not like him at first, I hope you try and continue on! Cahaya, as befitting of ridi gongs, is cringe, crazy and clown (and OP!). He's obsessed with Seowoon even before realising his feelings, and does crazy stuff such as commissioning Seowoon's jacket to have his name plastered all over it... He's also very much a pe*vert (≖_≖)


His life on Aso in the SS after the reset was literally think about Seowoon > destroy some gates > beat up some people > think about Seowoon XD Seowoon was surprised when he said he didn't have any friends and everyone thought he was crazy


There are times when their actions may seem frustrating, which is to be expected since they both think it's 'unrequited love', but the outcome is worth it, so just bear with it for a bit ¬‿¬

Han Donhee is the MVP of this novel. I do not accept any objections. This tsundere has it hard with a certain crazy alien bastard bullying him whenever he gets jealous or has relationship problems.

There are many characters in this novel that you might not like at first, but will probably come to love (e.g. Um Jigun, Namgung Jun). While there are tr*shy and self-centred characters in here who do deserve to die, there are also many who are just trying to make the best of what they have and don't necessarily mean any harm. Unfortunately, not all of them live on :/


But don't worry, it's only temporary o͡͡͡╮ (。❛ᴗ❛。) ╭o͡͡͡ >


There are a number of twists in this novel, and it involves time and space shenanigans, so keep an eye out for hints. To conclude, I really really love this novel and highly recommend it. The only thing I wasn't completely satisfied with was the ending, but I'm still kinda glad it turned out that way, and the SS were really good and absolutely made up for it! <<less
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