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Taking Care of My Younger Sister’s Too Naive of a Beautiful Yankee High Schooler, Then Falling in Love
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Rating(4.3 / 5.0, 126 votes)
5    63% (80 votes)
4    18% (23 votes)
3    10% (13 votes)
2    2% (2 votes)
1    6% (8 votes)
Language
Support Book (#ad)
Author(s)
One entry per line
Artist(s)
One entry per line
Year
Example: 2012
2021
Status in COO
Status in Country of Origin. One entry per line
1 Volume (completed)
Licensed
N/A
Completely Translated
Original Publisher
One entry per line
English Publisher
One entry per line
N/A
Release Frequency
Every 67 Day(s)
Activity Stats
[Graph]
Weekly Rank: #2000
Monthly Rank: #7142
All Time Rank: #4773
Reading List
[Graph]
On 1797 Reading Lists
Monthly Rank: #3417
All Time Rank: #4847

Description

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Onii-san is the man who can make me grow up! Marry me!

The room of a university student with zero love experience, Tsukasa, has become the hangout spot for his younger sister, who made her debut as a yankee when she entered high school, and her friends.

One day, he found a bulge on his bed and flipped over the cover to find Erika, the most beautiful girl among his younger sister’s friends, asleep.

“Ah, sorry… My period just makes me so sleepy”

“You’re too frank, I don’t know how to respond to that…”

Unable to leave such a naive and free-spirited girl alone, Tsukasa started to drill her in manners and common sense.

Falling in love with Tsukasa, without hiding her feelings of “love”, Erika makes a ferocious approach on him! On the other hand, Tsukasa was also charmed by her upfrontness as she tried her best to learn what was taught to her.

The love life of a yankee high schooler and a caring university student begins!

Associated Names
One entry per line
Imouto no Tomodachi no Bijin Yankee JK: Sekenshirazu Sugite Sewa wo Yaiteitara Horeraremashita
My Sister's Friend is a Beautiful High School Yankee: I Fell in Love With Her Because She Was Too Naive to Take Care of Herself
My Sister’s Friend is a Beautiful Yankee JK
妹の友達の美人ヤンキーＪＫ　世間知らず過ぎて世話を焼いていたら惚れられました
Related Series
N/A
Recommendations
Every Morning the Most Popular Girl at School Sits Next to Me on the Train (1)
Why Is the Prettiest Girl in School Trying to Talk to a Loner Like Me during Lunch Break? (1)
Inkya no Boku ni Batsu Game ni Kokuhaku Shitekita Hazu no Gyaru ga, Doumitemo Boku ni Betahore Desu (1)
Lonely Loser, I’ll Become Blonde Frivolous Gyaru’s Favourite (WN) (1)
Tomodachi no Imouto ga Ore ni Dake Uzai (1)
Recommendation Lists
  1. RomComs I liked
  2. NaCl's read list
  3. Romance (fluff series)
  4. Light Novel
  5. Romance Diabetes

Latest Release

Date Group Release
08/16/21 Neosekai Translations c21
08/16/21 Neosekai Translations c20
08/16/21 Neosekai Translations c19
08/14/21 Neosekai Translations c18
08/13/21 Neosekai Translations c17
08/13/21 Neosekai Translations c16
08/11/21 Neosekai Translations c15
08/10/21 Neosekai Translations c14
08/10/21 Neosekai Translations c13
08/10/21 Neosekai Translations c12
08/07/21 Neosekai Translations c11
08/07/21 Neosekai Translations c10
08/06/21 Neosekai Translations c9
08/05/21 Neosekai Translations c8
08/03/21 Neosekai Translations c7
12
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10 Reviews sorted by


Yash Allen
Yash Allen rated it
July 28, 2021
Status: c2
So far amazing this light novel full fluffy ness and flirting comedy give it try translation from neosekai is best and simple easy to read

After start reading it will keep you attract MC and FML both are good character vise and personality vise
9 Likes · Like Permalink | Report
PPpupu
PPpupu rated it
August 3, 2021
Status: --
If you're one of the people who hate tsunderes because they're abusive, don't read this.

The first few chapters have the sister and her three yankee friends insulting the MC and he just takes it like a b*tch. He deserves it though, dude's got no backbone.

MC is generic japanese beta with no personality. I guess he's supposed to have a big-brother/motherly-type character but it only seems to show when he dotes on the LI yankee friend, and the interactions with the sister and other two girls is just him failing at... more>> retorting to their insults.

It would've been much more interesing if the story came out of him worrying about and trying to take care of the girls but I guess that's too high of an expectation. It's the generic "I'm nice but I don't deserve love but woops here it comes anyway" type of tr*sh, just in another ever so-slightly different setting.

Also, I get the feeling that a lot of these nipponese MCs give off the smell of trying very hard at pretending-to-not-be-pe*verts. I guess that's the authors' stink rubbing off on their writing. <<less
8 Likes · Like Permalink | Report
Goldoire
Goldoire rated it
August 10, 2021
Status: c14
Guess it's time for me to write a review. So for starters, the person who gave it a one star is wrong in a few aspects. First off, this isn't meant to be an alpha dominating type of story, so ofc if you're into that, this isn't it.

But instead, the MC is a lot more sensible and rational imo than the typical beta-male protag that the comment mentions. Sure, he gets treated a bit like a pushover but that's obviously because he has a soft corner for his little sister's... more>> friends, and he does actively try to persuade them. Also, even though he gets flustered from time to time, it's a fraction of the amount of pe*vert situations you see in other stories.

Aside from that, the translation and plotline is pretty good. It's fluff, with some cliche elements here and there, but in general the girls are yankees/gyarus which is rare for fluff LNs, which is a plus. And the MC being kinda fresh along with other elements makes it a overall nice read. <<less
7 Likes · Like Permalink | Report
mfssir
mfssir rated it
August 10, 2021
Status: c14
Well, it have some cliche about erika (heroine) family/background and some yankee who always disturb MC (MC sister, MC sister friend 1&2) but erika is not like that 3 yankee who a bit annoying.

MC little sister know erika love MC, so she always set MC and erika alone in MC house.

Its still enjoyable because MC sister is not brocon like in other ecchi stories, and MC sister friend seems doesnt have a interest with mc
4 Likes · Like Permalink | Report
Lynkaster
Lynkaster rated it
August 17, 2021
Status: Completed
A cute and somehow realistic story about a good big bro and kind "Yankees". Each character got a lil backstory and even if it was a bit lightly told, really gave dimension to the them.

It's a romance between that kind but uptight big bro and a clueless Yankee friend-of-his-sister.

Really a nice read, quite short too but the timeline is well done enough.

... more>> Translation was great and writing style wasn't bad either.

Recommended 4.5/5

Ps: please, don't let the pov of one commentator make you give up on a story. If you like romance, it's great and you'll learn to empathize with other people more by reading about different types of characters in those different stories <<less
3 Likes · Like Permalink | Report
johnmc
johnmc rated it
August 19, 2021
Status: c21
It is just as other reviews said. This is a short and sweet LN with a realistic MC who is not dense and/or unnecessarily h**ny like other romance LNs. Personally, I am reluctant to give it a 4 out of 5 as I think 3 out of 5 would fit more. Although the ending does not feel awkward like other LNs getting axed, this LN feels rushed. There could have been so many more areas to explore when the MC tries to help FMC gain "common sense" knowledge. Or, the... more>> relationship between the FMC and the little sister, the tension between the FMC and her family (which seems serious and I was ready to expect a drama), and so on. After expressing their love, it seems that's about it. All tensions are either ignored or deflated.

BUT, I have a feeling this is the intended path for this LN, which is, as mentioned, being short, straightforward, and fluffy. So for that intention alone, I think this LN is worth it. <<less
2 Likes · Like Permalink | Report
dralex
dralex rated it
December 30, 2023
Status: --
Very nice. Unexpectedly addictive. Too short.

No [major/unnecessary] drama, no misunderstandings.

Cool characters.

I like.

The accusation that MC has no backbone is absurd. The fact that he lets loose a bunch of high school girls who helped his sister like no one else in the family did is a sign of respect, gratitude and understanding. Especially since they were simply and harmlessly bantering with him.
0 Likes · Like Permalink | Report
dmntt
dmntt rated it
September 23, 2022
Status: Completed
This is a short and pretty average romcom. It doesn't have any glaring flaws and the pacing is decent, but it's a character-driven story and none of the characters or their interactions are very interesting. I really liked the concept of one young adult and a bunch of unruly yankee schoolgirls, it's a pretty original premise, but unfortunately the execution fails to capitalize on it much. There's a decent amount of fluff, but it didn't really move me too much. While the MC isn't a complete doormat, he is rather... more>> dull and unremarkable. The female lead is kind of cute, but she almost comes across as too weak and dumb, to the point where she can barely function on her own until the benevolent MC comes along to save her and teach her how the world works. It gives their eventual romance a bit of an uncomfortable undertone for me, because of the power imbalance. It also kinda gets on my nerves when the MC praises her for having learned so much and being thirsty for knowledge, but all the things she's learned is just house chores, and it seems heavily implied that she's gonna be a housewife after they get married. I get that this is cultural, but it still irks me. <<less
0 Likes · Like Permalink | Report
l2aYz
l2aYz rated it
August 22, 2021
Status: c21
It's all about fluffy. The drama is very light and ends really quick (The issue is quite big for Highschool girls but they solve a problem like huh? Kay..). The whole volume feels like short storys patch-up together.

well, Read it when you're bored it will made you smile a little. The fluffy is just mediocre at best. The artwork is cute though.

IMO, It's good to end at 1 Vol because there is no reason to dragging this but I hope the Epilogue gives me more detail about the future.
0 Likes · Like Permalink | Report
Professor Baka De DeluPerv
Professor Baka De DeluPerv rated it
August 16, 2021
Status: Completed
A totally biased review...

... more>>
Spoiler

Cute Fluffy Cute Fluffy Cute Fluffy Cute Fluffy Cute Fluffy Cute Fluffy Cute Fluffy Cute Fluffy Cute Fluffy Cute Fluffy

[collapse]

Less biased review...

Spoiler

As stated above, this is a cute, sweet, and fluffy novel with the most adorable FL! It is just as the title says, the story is about a guy falling in love with a cute naive girl who he thinks as a sister. But as they gradually spend more time together, the FL confesses her feelings for the ML, which he rejects, due to his thinking of her as a little sister. However, instead of giving up, the FL decides to make the ML fall for her. Which is a very cute section of the story. After a few attacks the ML admit his feelings and they start dating to which even cuter attacks are done by the FL~

[collapse]

Short version: Just read it if you're into cute sweet fluffs. (And cute tsunderes, little sister characters, non-idiotic Mc) <<less
0 Likes · Like Permalink | Report
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