Kagaku-teki ni Sonzai shiuru Creature Musume no Kansatsu Nisshi

Description

From Seven Seas:
Whether they’re part cat, part horse, or part spider, Daisuke has always been fascinated with the uniquely exotic beauty of monster girls. When he finds himself whisked away to a fantastic world full of all manner of demihuman life, he swiftly gets to work meeting (and analyzing!) as many as he can. There’s really only one logical thing for this stranded scientist to do: he’s going to become the creature girl harem king.

Type

Manga

Associated Names

Creature Girls: A Field Journal in Another World

The Observation Diary of Scientifically-Existing Creature Girls

存在科学可能性的生物少女观察日记

科学的に存在しうるクリーチャー娘の観察日誌

Groups Scanlating

N/A

Latest Release(s)

N/A

Status in Country of Origin

15 Volumes (Ongoing)

Completely Scanlated?

Anime Start/End Chapter

N/A

User Reviews

N/A

Forum

0 topics, 0 posts

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User Rating

Average: 7.4 / 10.0 (67 votes)

Bayesian Average: 7.06 / 10.0

43%

10%

13%

Last Updated

April 22nd, 2025 5:18am PDT - 3 weeks ago

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Genre

Action Adult Adventure Comedy Fantasy Harem Romance Seinen Supernatural
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Categories

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Category Recommendations

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Parallel Paradise

Recommendations

N/A

Author(s)

KAKERU

Artist(s)

KAKERU

Year

2017

Original Publisher

Akita Shoten

Serialized In (magazine)

Champion Cross (Akita Shoten)

Manga Cross (Akita Shoten)

Licensed (in English)

Yes

English Publisher

Seven Seas (12 Volumes; Ongoing)

Activity Stats (vs. other series)

Weekly Pos #802

(+6)

Monthly Pos #1086

(-79)

3 Month Pos #1739

(-535)

6 Month Pos #2497

(+393)

Year Pos #2474

(+280)

List Stats

On 367 reading lists

On 238 wish lists

On 16 completed lists

On 22 unfinished lists

On 136 custom lists

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Forum Posts Click to view the forum

User Comments [ Order by time added ]

Really good! Fantasy Stuff like anatomy is explained in detail.

by Trejon
4 years ago

Rating: 10.0 / 10.0

MC is transported to a fantasy world and using his guts and intelligence he becomes friends with monster girls, increasing civilization levels, teaching modern knowledge, creating new stuff and having sex with all kinds of monster girls.
There are currently at the date of this review 32 chapters translated. This manga is full of sex and nudity with various humans, beast girls and monster girls of all kinds. Its very interesting that the biology of each new being is explained and researched. For example. Zombies is a colony kind of worm which infest dead flesh, eats all the meat leaving the bone and the skin to reproduce which replaces the flesh with worms which in conjuntion control the zombie.
Magic dosnt seem to exist but there is a mystery going on that if you produce steam power, electricity, gunpowder research or gasoline research ALL and i mean ALL monsters will go to that place and completely destroy it

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Wow this is preachy af

by MatrixM
1 year ago

Rating: 3.0 / 10.0

Eventually half the time is just spent on rants about how society should be that don't check out in a modern society but are presented as they should. Initially it's presented as if it's just thought experiments of how alien cultures could work, but that drops eventually.

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weird manga, but interesting

by MegaAtomic2
2 years ago

Rating: N/A

By the creator of Mahou Shoujo Pretty Bell, it's basically "culture shock - the manga". It's a controversial, fantasy biology/stone age science/survival manga. There's a lot of sex and scientific explanation (fantasy or real). A big focus throughout the manga is otherworld tribe culture through different perspectives.

It sounds pretty controversial, and I could see how people would find issue with how it's portrayed. But also this manga is --once again--, "culture shock -- the manga", with a heaping helping of fantasy science and stone age science.

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not easy to explain, author is a genius autist

by trunkallergy
2 years ago

Rating: 10.0 / 10.0

The author clearly has a very seriously thought out set of ideals that he vicariously shares through various characters. On the surface, it's just a monster girl world isekai, but at frequent points, you'll see characters make full arguments and speeches about various social topics, including but not limited to feminism and human self-perceieved superiority to animals or "beasts". Aside from this, the various weaponry is fully fledged out in design, the fictitious monster girls have anatomy that is meticulously attempted at integration into our known biology, and almost every social interaction that strays from generic dialogue has a full blown inner working laid out in the form of thought bubbles, which express the author's perception of social hierarchy and the effects of environment and innate features on the mentality of (in this case) an ugly, short, unconfident virgin. Far be it from me to say whether the author's beliefs (or at least those he implements onto some of these characters) are right, wrong, indefensible, etc (they're pretty extreme to say the least though), but as someone who doesn't care for the monster girl schtick (and I hear there's ntr down the road, which I hate with every fiber of my being), I'm still reading due to how interesting it is, if only as a case study.

TLDR: Even if the weird ideals the author discussed at length vicariously through his characters is all hoopla at the end of the day(some very misanthropic and "old world, some very progressive and "new world" ), it's exceptionally well discussed and curious enough to keep reading if only just for that.

Giving a 10, not because I feel it's a 10, but I feel that the level of intricate detail and aforementioned discussions/ arguments, something I've never seen at this length, merit a 10, regardless of whether they're right or wrong

... Last updated 2 years ago

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Cuck shit later on

by ginx2666
2 years ago

Rating: N/A

Be aware that the male lead is a cuck - lets a random dude rape his harpy wife "because it's their culture" and in the same volume lets a father of his centaur wife finger her for the same reason, both times he watches. I expect more cuck shit to follow.

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Based isekai manga.

by EvgenijM86
4 years ago

Rating: 10.0 / 10.0

If you tired of seeing political correctness inserted into every story to the point that it's completely nonsensical (like the stories about completely different world/society) then this is 100% recommended. Finally a fresh perspective for once.

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Challenging Power Fantasies: A Deep Dive into the Idiosyncrasies of Creature Girls Societies

by pandor18
8 months ago

Rating: 9.0 / 10.0

I've really enjoyed it (even despite some straw man arguments it presents). I hope the complexity of its world and social perspectives continues to evolve. We need more rebellious members in the harem, with ideals that slightly conflict with those of the MC (even though it's already a polycule, a more complex one would be more interesting—the further it moves away from a typical power fantasy, the more I think the manga would improve). But aside from that, the amount of idiosyncrasy in the manga makes it worth it, surpassing the vast majority of Isekais whose biggest moral conflict doesn’t go beyond the standard of a popular shonen.

The fact that it's controversial is precisely a plus; I enjoy thinking about the fallacies the characters' arguments fall into, why I wouldn't agree with them, etc.

As for those who complain about the supposed cuckold content, as they say in my country: 'A hungry man thinks of bread.'

And finally, this is the only time that the inclusion of a second 'narrator' in an Isekai hasn't bothered me (the kids from 'Kumo desu ga, Nani ka?' were unbearable XD). I found it really interesting how they've handled the evolution of the protagonist's friend, even though sometimes it seems like he only exists to reinforce some incel fantasy, haha. I have no idea how it will end, which is great.

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You can just smell the unwashed sweatiness of the mangaka from all the way across the Pacific, would not want to be a woman within 10 meters of him

by Shaikspeare
3 months ago

Rating: 1.0 / 10.0

This would probably be Andrew Tate's favorite manga if he trafficked animals in addition to women

... Last updated 3 months ago

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its ok

by manhunt0r
9 months ago

Rating: 7.0 / 10.0

yeah, defecation on feminazi insanity is a breath of fresh air in the current atmosphere of an open air outhouse, but ill be damned if the author is not beating a dead horse with a jackhammer after riding the same points to death for about ten damned chapters in total.
the anatomical approach to monster(girls) is also very refreshing and novel, it actually tries to turn fantasy cliches into actual grounded beings avoiding the "its magic, i aint gotta explain shit" cop-out.
the grounded approach to politics and relationships is yet again refreshing and avoiding trite cliches.

honestly, all in all this work is completely antithetical to jap writing style which is its main merit.
were it not for the overly preachy shounen nature of it and the very poor technological development aspects this could easily be an 8.5+ despite the completely generic setting and plot.

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I fucking hate having a 2nd MC

by Kookiezi
1 year ago

Rating: 6.0 / 10.0

I truly hated it whenever an author brings in a 2nd male lead into the series like for fuck sake why would you do that shit?

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