I'm Seiko. I'm childhood friends with Yoshi-kun, and we always hang out together. But these strange new feelings I have for him leave me stumped...

I'm Yoshito. Is Sei-chan just my childhood friend, or...?

This is Shiroi Mado no Mukougawa, the story of a budding romance between Seiko and Yoshito, of their fluttering hearts, and of their hearts brought together.

[From Stage Storm] :

This manga includes two different stories.

1) Hoshi no Harmony (2 chapters) : The first one is about a girl, Yukiko, who is always doing what others tell her to do and a boy, Wada, who can't stand how his classmates always taking advantage of her na?veté and kindness and tries to knock some sense into her.

2) (4 chapters) Mayuko and Sugikake's story : Mayuko had an unrequited love with her cousin and promised herself to not fall in love again but everything changes when Sugikake, her sempai in the volley club, starts picking on her.

On a rainy Friday, Yayoi makes an effort to go to the store to get a new pair of glasses. With her poor eye sight she ends up bumping into a guy who is soaking wet and this guy ends up helping her get to the store. He runs off quickly and Yayoi is unable to thank him. From that day onwards she labels him as Mr. Friday and has him constantly on her mind. Now her life is filled with wonder and questions as she fumbles to try and find the truth about who Mr. Friday might really be. Can it really be someone from her school?

Chizumi is a high school student with Fujiomi, who is her senior by one year. However, the story continues on to when Fujiomi goes to college and Chizumi is still in high school. Chizumi is your average clumsy girl and Fujiomi your hot guy, which makes you wonder how the pair fits together. Indeed, many other characters in the story wonder the same thing and do not hesitate to test the limits of this peculiar relationship.

This is a cowboy shoujo manga set in the Wild West. Miriam is an orphan. Her father was a drunken gambler; she only had a dress and they moved from place to place, until one day her father died and Grace took her in. The series follows Miriam's life, growing up, and falling in love with her life-long friend, the skillful sharpshooter Douglas.
First of the Miriam series (3 volumes), followed by sequels Jikan wo Tomete Matteite (3 volumes) and Sore nari ni Romantic! (1 volume). Seven volumes total

From Wingtip Cafe:
Suzu, an ordinary girl who possess extra-ordinary power to summon demons, was left with a flute, the only keepsake of her disappearing ‘Father’. In the flute dwelt the guardian spirit who responds to her plea in danger.

On her way home from school one day, Noriko is unexpectedly plunged into a strange and extraordinary fantasy world. Her troubles compound exponentially when she is rescued and befriended by a handsome young man by the name of Izark. He may be brave and courageous, but inside Izark lurks the darkest evil imaginable. And according to an ancient prophecy, Noriko possesses the power to unleash that evil. Now, inexorably bound together, these two unlikely allies must navigate a world both wondrous and hostile.
(Source: Viz)