Mangas

Maachi is a 15 year-old girl who loves her brother Riichi. Actually, the two of them are not related by blood, but due to their parents work situation they are forced to live alone together. Riichi, whose looks, personality, and grades are top-class, is the idol around school. But he has a huge secret that only Maachi knows about. Riichi is actually an otaku!
ひとひらの恋が降る, 冬之恋物语, 冬之戀物語, A Single Snowflake of Love Falls, A Single Snowflake of Love Falls- Forecast of Changing Colours, Flakes of Love are Falling
There's a jinx at Haruru's school - if a couple sees the blue train at 6 am together, they'll be together forever! But if a couple sees the blue train at 10 pm together, they'll break up!Haruru is going out with Nagi, a boy who goes to another school, and their love is just starting to blossom. But what happens when Haruru happens to see the 6 am blue train with someone else?!
君が舞い降りてきた -  You Came Floating Down -  You Fly Down
Collection of 5 short stories by Yabuuchi Yuu. Yayoi Itou Kimi ga Mai Orite Kita Itou wakes up one morning after a hard night - he got layed off his only job - and finds a highschool girl in his home. The girl, claiming to be running away from home, decides to cook for him for one week in exchange, all the while trying to hide a secret. Sakura Sensation Sakura, 9th grader, is frustrated by the fact that all the boys her age are immature. Her wish for a more sophisticated older boyfriend seems to come true when her mom hires a university-age tutor.
Koi o Kanaderu Kisetsu - Crescendo -  Crescendo Memory
2007
Kazune, Yuzuru et Yanna adorent le groupe "Crescent" et sont inséparables. Puis, Yanna révèle qu'elle aime Yuzuru et Kazune lui remonte le moral. Kazune découvre que sa famille va partir alors que Yuzuru l'appelle pour lui demander si elle voudrait partir avec lui a un concert de "Crescent".....
恋を奏でる季節, Crescendo Memory, Koi wo Kanaderu Kisetsu, Koi wo Kanaderu Kisetsu Crescendo, Kokoro Prism, Link - The Palm of Your Hand
Collection of short stories:
まほちゅー!, 魔法戀學苑, Mahochū!, Mahochū! Plus, Mahochu! &, Mahochu! Plus, Mahochu-! Plus, Mahochuu! Plus, Mahochu–!, Mahochu–! &, Mahochu–! +, Mahochu!
Airu is a clumsy and scatter brained girl. She was looking forward to a flowery middle school life, but due to her being from a 'family of witches,' she was admitted instead to Mahoraba Academy. In a strange school without any friends, the lonely Airu encounters strange people who use a special power called Maho...!? A magical school life begins!
水色時代 -  Aqua Age -  Blue Period -  Temi d'amore tra i banchi di scuola (Italian) -  The Blue-Green Years
From here: Junior High-school life story. Comparable to the American TV series "The Wonder Years". We follow the life of Kawai Yuuko beginning in junior high. Throughout the passing years, we see her grow up and sort out her life with her friends, her parents and her love.
Tachibana Tsubomi is an 11 years old 5th year who is a little on the shy side. Soon after becoming friends with Saya after discussing her mother's pregnancy, Tsubomi faces her first period, her friend Yae purchases a bra, and Rea begins to grow hair in new places. Little by little their bodies are maturing, boy and girls have problems they can't discuss, just what is the body of an adult like? This widely-acclaimed serial builds heart-pounding romances and painful friendships revolving around Tsubomi's concern about sexuality.
ぴゅあぴゅあ -  ぴゅあ・ぴゅあ -  PurePure -  Pyua Pyua
[From Ivyscan]: Miruku gets the shock of her life when she finds a strange person in her bed one morning. Ruu claims to be an angel who has cast a spell on Miruku's family and schoolmates. In return for silence about her identity, Ruu agrees to help Miruku any way she can. One day, a student quarrels with the rest of the class. Ruu tries to put things right with a spell, but it doesn't seem to work on that student...
Girl Boy
Each volume follows the adventures of a different boy who, through various comedic circumstances, ends up becoming a cross-dressing idol singer.
少女少年~GO!GO!ICHIGO -  Shoujo Shounen ~GO!GO!ICHIGO -  ~Shoujo Shounen~ Go! Go! Ichigo
Anzu, has a new neighbor, but this neighbor is no other than her childhood friend Ichigo. This, extremely gorgeous girl, already transfered to her school and everything, but... What's this feeling that she gives off her? Anzu seems, to have forgot something really important...