Namaiki Imouto-chan - Vol. 3 Ch. 30 - M-My bikini got swept away...

[MangaDex]

 

[Vverg]

Yup, prefer this one.

 

[cloud04]

is this another girl? boobs are small on her

 

[silverpetricof]

You know what I'll go nude and give this girl a hug. If we're both naked she ought to be less embarrassed.

Thanks for the translation (her boobs are cute, and I love seeing her vagina in the water).

 

[sirflappy]

is this another girl? boobs are small on her

I think it's his sister's friend?

 

[cloud04]

I think it's his sister's friend?

so we got the sis' friend, the sis, and the gf(big booba)

 

[Bobdillan69]

Be warned, most recent release of content is cuck content with her whoring herself for money to a stranger.

Not even making this up:

I voiced concerns when the author started doing stuff that wasn't the brother....

But is a pity that I turned out to be right... is only a matter of time until they do cuck content with the sister, hell there might be one already that I over-looked. (they may have already with a texting one, cbf TLing it to find out).

Either way, obvious sinking ship, easiest drop of my life.

 

[Koneko_Nyaa]

Be warned, most recent release of content is cuck content with her whoring herself for money to a stranger.

...

Either way, obvious sinking ship, easiest drop of my life.

^ You know, I think I'll bail too. I don't even need to wait to find out.

It is impossible to follow.
It just feels like a random series of brain farts where a handful of reoccurring girl characters are placed in random perverted situations with no planning, thought, or consequences.
There is no plot here. Whatever perceived backstory appears to be going on is just your brain trying to create continuity from coincidence.
The only way this works is as a collection of random artwork with random dialogue. Attempting to read more into it will eventually unfold a whore's world where anyone can end up getting lewd with anyone else based on the author's whim of the day.

If you're hoping for some story about an imouto and her onii-chan, you won't find it here. The "imouto" in the title has no meaning other than at least one of the girls being someone's little sister and as such will occasionally call the reader "onii-chan". Except, the reader is not always "onii-chan". The reader is expected to fill the role of whomever the convenient person happens to be for the girl to expose herself to in any given situation.
It honestly feels like false advertising.

Good hentai adds value to good art with good plot. This one adds no plot value to mediocre art.
We are all just wasting our time.

If you're here for the porn: look elsewhere;
If you're here for the plot: look elsewhere as well.