From Manga Jouhou:
Takashi Sone is living on his own while he is attending college. Out of the blue, his parents tell him that his sister, Mafuyu, is moving in to live with him and that she will be attending a high school in his area.
When she arrives, he finds out that she was kicked out of her old school for getting caught making out with another girl. Soon afterwards, the other girl arrives, having thrown away everything she owns in order to run away and live with Mafuyu.

Volume 11 has a unreleated 2 chapter story at the end called Frills

From Bado-Scans:
Daichi Yonekawa thinks that badminton is a girl's sport and is forced to practice with his twin sister, Yuki. Daichi finds himself playing Taka Tsubahara, the Japanese Junior Champion, because he is too bored "practicing" with his sister. He soon discovers the thrill of playing badminton and even quits his soccer team to practice badminton full time. He now aims to play against Taka Tsubahara once again but this time on equal grounds...

From FairGame:

There is first time at everything, and you don't know anything about it. Not about your partner, not about yourself and even how to advance in love. In a certain port city, energetic high schooler Kana, and firm high schooler Kouki live. Two of them experiencing first time at every thing they do. Author of "Smash!", Saki Kaori presents, Hajimete Datte ba!. A heartful love story has now begun

From K.I.S.S.:
Shinichirou would rather spend his life playing games on the internet, but sadly he's a heir to a company. His grandfather deems his current life-style unfit for a heir, so he throws him into a house with eight young and beautiful girls. What's more, within one year he'll have to choose one of them as his bride. What will happen to him now?

From Bado-Scans:

Smash! is about two childhood friends (Shouta and Miwa) who share a common love for Badminton. Miwa, who's in love with Shouta, tries to persuade Shouta to apply to the same badminton school as her but the latter being of a carefree, easy-going and dense nature, brushes her away and states that he only plays badminton for fun.

However, Shouta's perspective of badminton quickly changes after a fateful encounter with Yuuhi (a mute girl). In his search for his badminton goddess Yuuhi, Shouta met Anan and thereafter, decides that he's going to pursue badminton more seriously...