Han, Yu-Rang

Hyun-Bin has been surviving on the streets by hiding the fact that she's a girl. In a tragic turn of events, her beloved little brother dies and Hyun-Bin runs away from the begging, from the gangs - straight into the clutches of a rich family. Her life might have become better but it's far from rosy: she has to undergo strict training every day and guard the family's youngest member, innocent and princess-like Yae-Ha. There are  only two rules, Hyun-Bin has to protect Yae-Ha with her life and no one must ever find out that she's a girl. It's a lonely and cold way of life but a fateful encounter with the delinquent Yun-Ha becomes a catalyst of changes to come, where loyalty and a sense of duty clash with feelings of love...

(Source: dollie_mixtures)

Love in the Mask

가면속의 사랑

Hwang, Sook Ji

Menga is simply known as the vice rep and is bullied. Hanako has moved to Korea but was robbed the first day and has nothing. Na Hong Soo is known as a troublemaker and is in constant trouble. And Eechan is the student body president, very popular and known as Bacchus. It seems they have nothing in common but this will change soon. 

(Source: mangaupdates.com)

Izumi, Asou

It's about a girl named Hikari Kamijou who dreams of becoming a national rhythmic gymnastics champion.

Hikari no Densetsu is primarily a love story that it is set in the late 80s junior high school atmosphere. The plot revolves around four characters and how they work to achieve their dreams. Hikari Kamijou, a young, naïve, care-free, young woman who dreams of becoming an Olympic Champion in the sport of rhythmic gymnastics ever since she witnessed a performance of the young Diliana Georgieva (a champion Bulgarian rhythmic gymnast). And while she performs poorly and is not very confidant in her skills as a rhythmic gymnast, she is very passionate about the sport and shows occasional brilliance during her performances.

(Source: Wikipedia)

Hikari no Densetsu

光の伝説

Fujito, Yoko

Keigo Satou has a crush on his classmate/friend, Arai, who is always cheerful. He tries to make her fall in love with him even though she doesn't notice him. 

(Source: Esthétique)

Joyful Days?

ジョイフルデイズ?

Yamato, Waki

Nakaaki Keiko and Mimasaka Kousuke met when they were only 16 years old in high school. Keiko was the student council vice president and top of her class. Kousuke had been expelled from his previous school and spent most of his time making films. This story chronicles the lives of these two seemingly dissimilar friends over a span of 10 years, weaving a poignant tale of misconnections and missed opportunities in a pursuit to find their true selves.

Aiiro Shinwa

あい色神話

Touda, Yoshimi

1. Natsu no Zangai
2. Watashitachi no Hakoniwa
3. Natsu no Ato
4. 5-jIkanme wa Usotsuki
5. Ibitsu na Taiyou

Natsu no Zangai

夏の残骸

Yoshida, Akimi

The drama club of an all girl high school puts on the play "The Cherry Orchard" by Anton Chekhov for the anniversary of the school's founding.

Each chapter follows the life of one of the club members while the preparations for the play go on.

(Source: Wikipedia)

Sakura no Sono

櫻の園

Two story one-shot manwha.

1. Soundproofing System of My Room
The girl living in room 206 is annoyed with all of the sounds coming from the guy in room 207. The guy in room 207 is fed up with the noise coming from the girl in room 206. What happens when the two confront each other about their noise problem?

2. Extremely satisfied
An extremely bored girl calls someone to fix her tv. 
(Source: Manga-Updates)

Room

Wada, Naoko

This is a wonderful story about Aoi -a spirited and carefree girl who was bound to a wheelchair due to an unfortunate accident- and Ryuuta, her high school sweetheart. See how he helps her adjust to this drastic change in her life and how Aoi manages to deal with the difficulties of being bound to a wheelchair and how she overcomes it with the help of the people around her. (Source: zero_kiryuu)

Flower

フラワー

Natsumi, Rin

Yaneura no Mother

屋根裏のマザー

Yamaguchi, Miyuki

Mary, who doesn't feel she's happy in life in spite of being rich. Sakura, who worries over being considerably slow. For Mary, it's expressing her love through a music box, and for Sakura, it's gaining the courage to be herself ..

(Source: Transcendence)

Otobako Garden

音匣ガーデン

Nakaji, Yuki

Karina's childhood friend Ikumi-kun had moved away in primary school, but he is now returning because of his father's remarriage; not only that, they are next door neighbors! The volleyball club that she has joined as a manager of course includes Ikumi, but also another childhood friend, Yasu, Ikumi's older stepbrother Miyuki-san, and the demon-like Arisaka-senpai, all members with rich personalities. What will become of Karina's high school life?! 

Credit - Kyuujitsu Scans

Manga Like Ohisama nanka Denakutemo Kamawanai