....was harem route just unlocked?

anyway, I giggled when seeing the snack name one page 3. haha

Ok what's naughty then. Seriously i need to know.

So sequel chapter Hospitality Revolution when?

Ooookay. That one threw me for a loop, an enjoyable one, but blindsided all the same. What a roller coaster of twisted common sense!

I don't need sleep i need answers

The art was as amazing as the erotic humor with this one.

"Are those her boyfriend's big shoes!?"  (page 18, panel 3)

This may be a reference to the old notion that a man with big
feet also has a big dick.  It's exactly the sort of thing the lewd
Ichinoki Sisters might believe.

Let's address the Big Unanswered Question:
When Yuuichi asks, "What kinda stuff do you consider 'naughty'?",
what does Uika whisper in his ear?

There are three possible answers:
(1)  Something totally innocuous that no rational person would consider naughty
(and which may not even have anything to do with physical intimacy).
(2)  Something unbelievably gross, weird, and perverted.
(3)  Nothing---because there's no answer, not even from Nanatsuda.

I offer number 3 because there's a possibility that Nanatsuda is simply playing with the
reader's head throughout the whole chapter.  He gives us a Big Unanswered Question
(which may have no answer) and a cute female MC whose attitude toward sex is utterly
confusing, plus a huge hook for a sequel that may not even be forthcoming.

In short, the chapter may be nothing but a big prank on the reader (but it's no less
entertaining for all that).

The last panel (page 18, panel 6) is particularly fascinating because it looks like Uika
is about to go downstairs naked, and she's giving Yuuichi a questioning look, as if to
say, "Are you coming along?  Don't worry about being naked."

After all, he's obviously about to become involved in a big orgy with all four of the randy
Ichinoki Sisters, so there's no reason for him to get dressed.  Once the fun begins, Uika
will undoubtedly declare it "not naughty."  I am fervently praying for a sequel.

Okay stop........
Harem time

At first I thought she's one of those weirdos or those "after marriage" types but no, it's just that her sisters are THAT extreme.

Oh well, she's noice & sexy so all's well ends well, I guess. I hope. This is some goooooood stuff, hope more is to come from the author.

I was curious how a hentai story would go with an overly pure maiden. Turns out I need not have worried. Her sisters corrupted her sensibilities to the point where she doesn't recognize that you have to "stick it in" to begin fucking.

I wonder what she actually considered naughty.  Was it hand holding or weird fringe stuff like scat or strangulation. 

As noted on the first page, this release won the 12th Eromanga Grand Prix. This is a semi-annual, Wani sponsored contest for aspiring artists where if their release wins, it gets published in a Wani owned magazine. Mayatsuba Mono and Nanae are also winners of the 12th Grand Prix (both had their work published on FAKKU). Other notable artists who have won in the past are Esuke, Izure, Momoko, and Sakuma Tsukasa

HOLDING HANDS IS NAUGHTY

There seems to be varying definitions in this story as to just what constitutes "naughty stuff". Seems Uika-chan is confused as heck thanks to the influences of her elder sisters. Can Yuuichi-kun hold out with his desire to only be with Uika in the face of possibly meeting three "Sexy Onee-sans"?

For the answer to these and other questions, artist-san had better produce a sequel.

In the meanwhile, artist's FAKKU debut is "APPROVED!"

Sequel or we make a REVOLUTION!!!

I'm sure too her the naughty thing is really...just holding hands.

When your erotic sensibilities have been warped to the point where you don’t know where “sex” stops and “fucking” begins.

Seconds, please.

Nice debut work by Nanatsuda! Hopefully this gets a sequel! This needs a sequel cuz we need to find out the “hospitality” of the older sisters towards the boyfriend for research purposes!

When the first 3 girls are all sluts of some sort and the 4th one is just unusually innocent...A bit overly so...Hmm. You know what they say about the innocent looking ones.
Erm...How they got to sex was rather interesting, though. She was basically finding loopholes (except not really?) based on phrasing or technicalities to get around what she considers 'naughty' stuff. Certainly an interesting angle to take.
Either that or what she considers naughty is way off the charts that normal sex is considered...Not naughty? And that's probably the case considering his reaction to her whispering it to him.
That ending though. The sisters' Hospitality...And they're all sluts to some degree...Harem route, possibly? Would a 3P...4P...5P? Be considered naughty by her standards?

He didn't know he walked into the sister lion den. I wish him luck :)

This has to have a sequel