The appeal and reviews of "My Little Sister Can't Be This Cute": Why is this anime so special?

Kyosuke Kosaka is an ordinary high school boy, and for the past few years his relationship with his younger sister, Kirino, has been cold, with the two barely exchanging greetings. However, one day, Kyosuke discovers a moe anime DVD case lying in the entranceway, and the situation suddenly changes. Intrigued, Kyosuke searches for its owner, and finds that it belongs to his younger sister, Kirino, who is a winner in life and has a fulfilling life. Kyosuke is surprised by this unexpected turn of events, but one night a few days later, an even more surprising event occurs. Kirino, who has practically ignored Kyosuke, suddenly barges into Kyosuke's room and says she needs some advice on her life. The content of the advice is...

My cheeky, haughty, and arrogant little sister has a secret that she can't tell anyone...

Kyosuke Kosaka is an ordinary high school boy, and for the past few years his relationship with his younger sister, Kirino, has been cold, with the two barely exchanging greetings. However, one day, Kyosuke discovers a moe anime DVD case lying in the entranceway, and the situation suddenly changes. Intrigued, Kyosuke searches for its owner, and finds that it belongs to his younger sister, Kirino, who is a winner in life and has a fulfilling life. Kyosuke is surprised by this unexpected turn of events, but a few days later, one night, something even more surprising happens. Kirino, who has practically ignored Kyosuke, suddenly barges into Kyosuke's room and says she needs some advice on her life. What is the content of her advice...?

*Quoted from Bandai Channel

・Kousaka Kirino/Taketatsu Ayana・Kousaka Kyosuke/Nakamura Yuichi・Kuroneko/Hanazawa Kana・Tamura Manami/Sato Satomi・Saori・Bajina/Nabatame Hitomi・Aragaki Ayase/Hayami Saori・Kurusu Kanako/Tamura Yukari・Kousaka Daisuke/Tateki Fumihiko・Kousaka Yoshino/Watanabe Akino・Meruru/Tamura Yukari・Kometto-kun/Iwata Mitsuo・Akagi Kohei/Majima Junji・Akagi Sena/ Mariya Ise and Gennosuke Miura / Tsuyoshi Inoue and Kaede Makabe / Yoshitsugu Matsuoka and Kurara Hoshino / Yukari Tamura and Iwao Tamura / Hiromi Otsuda and Manami's grandfather / Shoto Kashii and Manami's grandmother / Kaoru Katagai and Mikoto / Ayane Sakura and Iori and Fate and Setsuna / Shizuka Ito and Kuroneko's younger sister / Yui Ogura and Rinko / Hiromi Igarashi and Miyabi / Tomoko Akitani and Bridget / Misaki Kuno

・Original work: Fushimi Tsukasa (Dengeki Bunko/Published by ASCII Media Works)
・Original illustrations by Hiro Kanzaki ・Planning by Koichiro Natsume, Kazutomo Suzuki, Shin Unozawa, Naohiro Oto ・Series composition by Hideyuki Kurata ・Supervisor by Keiichiro Kawaguchi ・Character design by Hiroyuki Oda ・Chief animation directors by Kana Ishida, Tetsuya Kawakami, Naoto Nakamura ・Layout and animation director by Mitsuru Soma ・Prop design by Takehiro Ishimoto ・Color design by Yasuko Suenaga ・Art director by Koji Eto (Studio Easter)
Director of photography: Hideki Imaizumi, Nozomi Shitara (T2 studio)
・Editor / Utsunomiya Masaki・Music / Kanzaki Satoru・Music Production / Aniplex・Sound Director / Motoyama Satoshi・Casting Manager / Matsuoka Cho・Special Effects / Abe Takatoshi・Paste-up Special Effects / Watanabe Natsumi (Episode 1), Murakami Tomoki・CG Producer / Matsuura Hiroaki・CG Creative Director / Suzuki Daisuke・CG Line Director / Tanaka Garyu・Monitor Graphics / Sanzigen Seki Kaori, Kitagawa Junko・Sound Adjuster / Tachibana Yasuo・Sound Assistant / Sawamura Yuki・Sound Effects / Yamatani Naoto (Soundbox)
・Sound Production / Magic Capsule Takatoshi Hamano・Video Editing / Sony PCL Tsukasa Yoshino, Yoshihiko Kojima, Tomoki Takemura・OP/ED Animation Director / Hideki Imaizumi・Design Works / Kana Ishida・Design Cooperation / Jimmy Stone・Costume Design Cooperation / Yuka Takashina, Jimmy Stone・Art Design Cooperation / Takehiro Ishimoto, AIC Art Department・Prop Design / Kazutaka Ema・Game Design / Mitsutaka Iguchi・Literary Setting / Seven Days War・Title Logo Design / Shindosha・In-game Illustration Management / Yasuzo Ohara・Planning Cooperation / Dengeki Bunko & Dengeki Bunko MAGAZINE Editorial Department, Naoko Koyama, Shigekaoru Sato (Quoras)
・Cooperation: Watanabe Takashi, Ichii Miho, Futami Takasuke, Takehara Tomoko ・Publicity producer: Takahashi Yuma, Komatsu Shintaro ・Publicity: Yaguchi Yasuyuki, Kitajima Mikio ・Web promotion: Kamitsuji Koji, Maruyama Satsuki ・Sales promotion: Kanazawa Toshiyuki ・Copyrights: Mineumihiko ・Producers: Iwakami Atsuhiro, Miki Kazuma, Goga Kazuto, Kanba Kozue ・Associate producers: Kashiwada Shinichiro, Obara Ittetsu, Oishi Takanori ・Theme song cooperation: Tonomura Keiichi (Sony Music Entertainment)
・Animation Producer: Kiyoshi Oki ・Production Producers: Noboru Yoshida, Takayuki Watanabe, Kota Kanazawa ・Animation Production: AIC Build
Director: Kobe Yoko Production: Aniplex, ASCII Media Works, Bandai Namco Games, Movic

Kirino Kosaka A modern middle school student and Kyosuke's younger sister. She is a reader model for a fashion magazine, has one of the best academic records in the prefecture, and is the ace of the track and field club, making her flawless. In fact, she loves anime, games, and other "otaku" things.
Kyosuke Kosaka is a very ordinary high school student. He likes to be "normal" and "safe," but sometimes he shows strong will. Kirino almost ignores him, but after a certain incident, he starts to receive "life advice."
・Black cat
A girl whom Kirino met at an offline meetup for the SNS community "Otaku Girls Gather." She is even more of an otaku than Kirino, and has her own blog. She dresses in gothic lolita fashion, and often makes harsh remarks and painful chuunibyou-like behavior.
・Saori Bajina
She is the administrator of the otaku community on social media, "Otaku Girls Gather." She is tall, wears a bandana on her head, round glasses, and a checked shirt tucked into her trousers, making her the "typical otaku fashion."
Manami Tamura is Kyosuke's childhood friend. Her grades are above average. Her hobbies are cooking and sewing. She's a bit of an airhead, but she has a calm and friendly personality. She's an "average" girl who is the polar opposite of Kirino.
Ayase Aragaki is a classmate of Kirino. They are especially close as they are fellow reader models for fashion magazines. She is cheerful, friendly, and polite, but she also has a tendency to be very opinionated.
A classmate of Kirino. She has twin tails and a small build. She is fearless and says what she thinks out loud, and she often uses rough language. She also has an unexpected talent?!

・Episode 1: There's no way I'd fall in love with my sister (2010/10/03)
・Episode 2: There's no way I'd go to an offline meetup with my sister (2010/10/10)
・Episode 3: My Little Sister Can't Be This Cute (2010/10/17)
・Episode 4: There's no way my little sister would go to the summer comic convention (2010/10/24)
・Episode 5: My Little Sister's Best Friend Can't Be This XX (2010/10/31)
・Episode 6: My childhood friend can't be this cute (2010/11/07)
・Episode 7: My Little Sister Can't Be Such a Novelist (2010/11/14)
・Episode 8: There's no way my little sister could be so animated (2010/11/21)
・Episode 9: There's no way my little sister would be so into eroge (2010/11/28)
・Episode 10: There's no way my little sister would cosplay like this (2010/12/05)
・Episode 11: My Little Sister Can't Be Such a Maid (2010/12/12)
・Episode 12 (GOOD END version) / My sister's life advice can't end here GOOD END (2010/12/19)
・Episode 12 (TRUE END version) / My Little Sister's Life Advice Can't End Here TRUE ROUTE (2011/02/22)
・Episode 13 (TRUE END version) / There's no way my junior could be this rotten (2011/03/29)
・Episode 14 (TRUE END version) / My junior can't be this cute (2011/04/26)
・Episode 15 (TRUE END version) / There's no way this is the last episode of My Little Sister (2011/05/31)

・My Little Sister Can't Be This Cute TRUE ROUTE
・My Little Sister Can't Be This Cute TRUE ROUTE Special Edition・My Little Sister Can't Be This Cute Bonus Footage・My Little Sister Can't Be This Cute.
・My Little Sister Can't Be This Cute. Final Episode WEB Distribution Version ・My Little Sister Can't Be This Cute. Bonus Video ・My Little Sister Can't Be This Cute. Gal Game Style Bonus Video

・OP1
・Period/2, 4~11, 12(TRUE ROUTE)~15(TRUE ROUTE)
・irony
Lyrics by kz
・Composition: kz
・Arrangement: kz
・Singer: ClariS

・ED1
・Period/1
・Sister please!
・Lyrics and composition: TRI-ReQ (Lyrics: MNW/Composition: Hoso-Q)
Arrangement: TRI-ReQ, KAZU
・Singer: Takasaka Kirino (Taketatsu Ayana)

・ED2
・Period/2
・Shine!
・Lyrics by mayupin
・Composition: Kumarobo ・Arrangement: Kumarobo, YAMAZO
・Singer: Takasaka Kirino (Taketatsu Ayana)

・ED3
・Period/3
・Horaism・Lyrics/Toma・Composition/Toma・Arrangement/project RAS, yamazo
・Singer: Takasaka Kirino (Taketatsu Ayana)

・ED4
・Period/4
・White Heart・Lyrics by Taishi
・Composition: Taishi
Arrangement: Taishi, ACOMPANAR
・Singer: Ayase Aragaki (Saori Hayami)

・ED5
・Period/5
・Orange ・Lyrics by hanawaya
・Composer: hanawaya
Arrangement: hanawaya, yamazo
・Singer: Takasaka Kirino (Taketatsu Ayana)

・ED6
・Period/6
・Maegami☆
Lyrics by arata
・Composition: arata
・Arrangement: arata, ACOMPANAR
・Singer: Manami Tamura (Satomi Sato)

・ED7
・Period/7
・Masquerade!
Lyrics by Tetra Project
・Composition/Tetra Project
・Arrangement: Tetra project, ACOMPANAR
・Song: Kuroneko (Kana Hanazawa)

・ED8
・Period/8
・Chameleon Daughter ・Lyrics by Yashikin ・Music by Yashikin ・Arrangement by Yashikin, Yamazo
・Singer: Saori Bajina (Hitomi Nabatame)

・ED9
・Period/9
・Because I like it!
・Lyrics: Misaki Arima ・Composition: Genya Kozuki ・Arrangement: Genya Kozuki, ACOMPANAR
・Singer: Takasaka Kirino (Taketatsu Ayana)

・ED10
・Period/10
・No, Tom is sexually aroused by his sister. ・Lyrics by Satsuki Ga Tenkomori ・Composition by Satsuki Ga Tenkomori ・Arrangement by Satsuki Ga Tenkomori, ACOMPANAR
・Song: Kanako Kurusu (Yukari Tamura)

・ED11
・Period/11
・Akihabara☆Dance☆Now!!
Lyrics: Yashikin Composition: Yashikin Arrangement: Yashikin, yamazo
Singers: Takasaka Kirino (Taketatsu Ayana), Kuroneko (Hanazawa Kana), Saori Bajina (Nabatame Hitomi)

・ED12
・Period/12 (GOOD END)
·I'm home.
Lyrics: Saori Kodama Composition: Akira Kobayashi Arrangement: Akira Kobayashi Vocals: Kirino Kosaka (Ayana Taketatsu)

・ED13
・Period／12(TRUE ROUTE)
・READY
・Lyrics by encounter+
・Composition: encounter+
・Arrangement: encounter+, yamazo
・Singer: Takasaka Kirino (Taketatsu Ayana)

・ED14
・Period／13(TRUE ROUTE)
・†Life is short, so fall in love, maiden†
Lyrics by Mitsu
・Composition: Mitsu
Arrangement: Mitsu, ACOMPANAR
・Song: Kuroneko (Kana Hanazawa)

・ED15
・Period／14(TRUE ROUTE)
・Serenade of Atonement・Lyrics/Neros・Composition/Neros・Arrangement/Neros, yamazo
・Singer: Kuroneko (Kana Hanazawa), Kyosuke Kosaka (Yuichi Nakamura)

・ED16
・Period／15(TRUE ROUTE)
・Keep on running
Lyrics: Shogo Kawaguchi Composition: Shogo Kawaguchi Arrangement: Shogo Kawaguchi, YAMAZO
・Singer: Takasaka Kirino (Taketatsu Ayana)

・IN1
Period: July, October
・Stardust☆Witch Meruru・Lyrics by Fushimi Tsukasa・Music by Kobayashi Akira・Arrangement by Kobayashi Akira・Singer by Meruru (Yukari Tamura)