Sis Plus: Don’t Worry, Be Happy

Oldest brother pats his middle sister on her head while her older and younger sisters look on

The unnamed pastry chef brother and his three younger sisters (going clockwise from right): Shiho, Himeka, and Cocoa.
From the manga series Sis Plus

Boogiepop Phantom: You Are Not Alone

Mamoru and Sayoko Oikawa standing and observing

Mamoru Oikawa and his little sister Sayoko watch over one another at different times of their lives.
Only from Episode 7 of the anime series Boogiepop Phantom

Recorder to Randoseru: The Tall and Short of It

Atsumi and Atsushi Miyagawa standing behind and leaning on giant recorders

High school girl Atsumi Miyagawa looks like a little kid, whereas her elementary school age brother Atsushi looks like an adult.
From the anime series Recorder to Randoseru

Happy Thanksgiving!

Big Sis and Little Bro shouting at one another

Thanksgiving may appear to be just some American holiday that’s all about eating as much food as you can, but it really isn’t. It’s a time to recognize and express gratitude for all the good that has happened, as well as the good yet to come. And family, of course, is a big part of that. Regardless of its origin — by blood or marriage, bonds of friendship, or even a shared interest among strangers — we are one big human family, and I am thankful for each and every one of you. Thank you for visiting Sister/Brother Complex, and have a great Thanksgiving!

Image from the manga series Kyoudai hodo Chikaku Tooimono wa Nai

Kyoudai hodo Chikaku Tooimono wa Nai: The Hard Truth

Big Sis and Little Bro shouting at one another

As the older sibling, Big Sis sometimes has to clarify a thing or two for Little Bro.
From the manga series Kyoudai hodo Chikaku Tooimono wa Nai

Aki Sora: What a Tangled Web We Weave

A resigned Sora stands between his older sister Aki (right) and his twin sister Nami (left)

Aki Aoi (right) is close to little brother Sora (middle) who has a younger twin sister Nami (left). Melodrama (and eros) ensues.
From the anime series Aki Sora

Aldnoah Zero: It’s All Right

Yuki Kaizuka giving thumbs up to her brother Inaho

Yuki Kaizuka is ever the optimist compared to super serious younger brother Inaho.
From the anime series Aldnoah.Zero

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