Step-Siblings Shoujo Manga - Your Gimmick

Marmalade Boy

March 2, 2023July 25, 2021

Name: Marmalade Boy
Mangaka: Yoshizumi, Wataru

Volumes: 8 (Complete)
Licensed: Tokyopop (8V Print)-(Out of Print)
2nd License: Seven Seas Entertainment
Type: Manga
Genre: Comedy/Drama
Age Group: Teen

Summary:
All Miki Koishikawa wanted was an ordinary family and that’s exactly what she had until her parents decided to move in with another couple (as in switching spouses!) and turned Miki’s world upside down. Now she lives in a house with four parents and her totally cute stepbrother, Yuu. It’s bad enough being brought into her parents’ strange soap opera, but Miki will star in a soap of her own as she deals with friends having affairs, trying to survive in school and ending up torn between her long-time crush, Ginta, and her new stepbrother!
–Manga Updates

Graphics Rating: 4/5
Plot Rating: 3/5

Screenshot from Netsuai Prince. A teen boy leans on a railing as he kisses a teen girl on her head.

Netsuai Prince: Onii-chan kimi ga suki

June 5, 2021May 28, 2021

Name: Netsuai Prince – Onii-chan Kimi ga Suki
Mangaka: Seizuki Madoka

Volumes: 16 (Ongoing)
Scanlations: V.03 Ch.10 (March 2021)
Type: Manga
Genre: Harem
Age Group: Teen

Summary:
Due to the second marriage of her mother, lively high-school student Amamiya Matsuri becomes the younger sister of the super popular idol group of triplets “Terzetto”! Star celebrities for stepbrothers?! A forbidden secret love with a perfect prince
–Manga Updates

Graphics Rating: 3/5
Plot Rating: 3/5

We Must Never Fall in Love

March 2, 2023February 12, 2021

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Name: We Must Never Fall in Love
Mangaka: Tsukishima Haru

Volumes: 10 (Complete)
Licensed: Kodansha (4 Volumes: Digital – Feb 2021)
Type: Manga
Genre: Comedy
Age Group: Teen

Summary:
Sakura confesses to Hatano-kun one summer and is rejected instantly, but does not have time to fall into a depression. She returns to her house to meet her new “younger brother,” what she never expected was her “little brother” to end up being bigger than her…
–Manga Updates

Graphics Rating: 3/5
Plot Rating: 3/5

Beware the Kamiki Brothers

March 2, 2023February 10, 2019

Name: Beware the Kamiki Brothers (Kamiki Kyoudai Okotowari)
Mangaka: Onda, Yuj

Volumes: 6 (Complete)
Licensed: Kodansha
Licensed Volumes: V.06 (Complete)
Type: Manga
Genre: Drama
Age Group: Teen

Summary:
High-school freshman Iroha’s life is about to change. Her mother just got remarried, and they’re both moving in with her new partner and his sons. The elder son is really hot, but he’s far from normal ? and together with his cute younger brother, she’s now stuck with them both morning, noon, and night! The mean elder brother and Iroha just can’t see eye to eye, and as the distance between all three of them decreases, cohabitation has never been so heart-poundingly exciting!

–Manga Updates

Graphics Rating: 4/5
Plot Rating: 3/5

Liar x Liar

July 18, 2020December 8, 2012

Name: Liar x Liar
Mangaka: Kindaichi, Renjuurou

Volumes: 10 (Complete)
Licensed: No
Scanlations: V.09 Ch.64 (Hiatus)
Scanlator: Mystic Iris
Type: Manga
Genre: Drama/Slice of Life/Josei
Age Group: Mature

Summary: One day, on a whim, 20-year-old Minato dresses up in her friend’s cute high school uniform and goes out briefly into the city. To her horror, she ends up running into her stepbrother, Tooru, who is actually only months younger than her. Since he’s cute, and a notorious player, Minato has had to deal with constant jealousy and suspicion from other girls all through their school days.

Amazingly, she manages to convince Tooru that she’s actually someone who just happens to look a lot like his sister. He is so convinced that he starts trying to date her and, for various reasons, she goes along with it. What started as a simple joke is now evolving into the biggest lie Minato has ever told!

–Mangaupdates

Graphics Rating: 3/5
Plot Rating: 4/5