Flash Behavior

Description

Can Yuli save humanity?!
Eaters — intelligent creatures from outer space that prey on Earthlings. Problem is, even though they look like humans, no one knows how to talk with them! Enter Yuli, the only known human to date who can communicate with the Eaters. Can Yuli save the world AND her love life?

Original Webtoon:
KakaoPage, Daum

Type

Manhwa

Related Series

N/A

Associated Names

Flash Action

Instinto de supervivencia

閃光行動

섬광행동

Groups Scanlating

Burnt Out Kids Scans

Latest Release(s)

c.11 by Burnt Out Kids Scans 4 years ago

c.10 by Burnt Out Kids Scans 4 years ago

c.9 by Burnt Out Kids Scans 4 years ago

Search for all releases of this series

Status in Country of Origin

36 Chapters (Complete)

Completely Scanlated?

Yes

Anime Start/End Chapter

N/A

User Reviews

N/A

Forum

0 topics, 0 posts

Click here to view the forum

User Rating

Average: 7.3 / 10.0 (36 votes)

Bayesian Average: 6.83 / 10.0

17%

11%

19%

22%

17%

Last Updated

June 13th, 2025 9:12am PDT - 3 months ago

Image [Report Inappropriate Content]

Genre

Drama Fantasy Mystery Psychological Romance Sci-fi Shoujo
Search for series of same genre(s)

Categories

Log in to vote! Show all (some hidden)

Category Recommendations

Haramasareru Nante Kiitenai! Jieitaiin no Ore ga Iseijin no Shokushu ni Hamerareru Nante!?

The Devil Ring

Shokuryou Jinrui Re: Starving Re:velation

Shin Maou Dante

Life 2: Giver/Taker

Recommendations

N/A

Author(s)

Michii

Mitch [Add]

Artist(s)

Mitch [Add]

Year

2020

Original Publisher

Daum

Kakao

Orange D (Defunct)

Ridibooks (Expired)

Serialized In (magazine)

KakaoPage (Kakao)

Kakao Webtoon (Daum)

Licensed (in English)

English Publisher

Manta (Expired)

Activity Stats (vs. other series)

Weekly Pos #732

(-41)

Monthly Pos #1968 (No change)

3 Month Pos #3242

(-514)

6 Month Pos #4039

(-1273)

Year Pos #6119

(-594)

List Stats

On 46 reading lists

On 51 wish lists

On 83 completed lists

On 4 unfinished lists

On 65 custom lists

Note: You must be logged in to update information on this page.

Forum Posts Click to view the forum

User Comments [ Order by usefulness ]

Very interesting... But rushed and too short

by StellaStar1
2 years ago

Rating: 6.0 / 10.0

This was one interesting manhwa. I came here for the yandere and it was good, altought not quite top notch but very satisfying. The worldbuilding, the background to everyxthing, were sadly too thin, and the worst part is that the author actually had so many good ideas that he never utilised, probably becouse of various constraints. The plot suffers becouse of this too - so many things happen in such a short time span, and you can't quite understand all of it, as we noted, the worldbuilding is sorely lacking. Thus, when our heroine, Yuli, is faced with a triple dilemma (trilemma), we don't get the depth of her confusion and het unability to decide, her being torn between Menas and just about everythign else.

The art here, while servicable, was pretty basic and low-key, totally in sync with the minimal world building, but boy, what potential to make this a proper SF manhwa, with a special aesthetics and a unique vibe. Too bad for this!

But the chars were what made the manhwa, especially Yuli and Menas. Their realtionship was intrguing and shared past was such a chef's kiss! Plus Menas is by far the best drawn char in the roster. His cold eyes and awkward, alienish behaviour but total devotion to the FL was also strangely alluring.

Overall, an okay manhwa for yandere ,overs, escpecially SF yandere lovers.

Was this comment useful? Yes

Round and round forever in misery

by catwoman1994
2 years ago

Rating: 6.0 / 10.0

The world collapses and everything sucks.

I feel like it was a chopped ending😮💨

... Last updated 2 years ago

Was this comment useful? Yes

Holy shit! This was freaking intense!

by Orionthehunter
2 years ago

Rating: 10.0 / 10.0

That ending, that ending! This story was a masterpiece. Never have I felt so creeped out by a male lead like him. The actual story felt way too short, and I feel like they could've spent more time on introducing the aliens. But in a way, this makes sense because neither do we care about our food's lives ourselves.

Everyone in this story is a complete psychopath. The world has gone mad and nobody's safe.

That poor female lead, I dunno what to feel about her. Her physical, mental, and emotional well being are probably entirely shattered by the end. At the same time, she does end up betraying humanity, so maybe she deserves it?

I genuinely don't know what to rate this, because I was just shocked and creeped out the entire time.

Definitely wouldn't recommend if you can't handle traumatic stories. Would recommend if you like stories where people choose their loved ones over the entire world, which in this case is quite literal.

... Last updated 2 years ago

Was this comment useful? Yes