The October issue of the GFantasy manga anthology has announced that the romantic comedy manga Horimiya is being adapted in to a TV anime that will premiere next January in Japan. The anime will feature Haruka Tomatsu  and Kouki Uchiyama as the lead characters Kyouko Hori and Izumi Miyamura, respectively. The initial staff is as follows along with the main characters:

Izumi Miyamura and Kyouko Hori

Staff
Director: Masashi Ishihama (Persona 5 the Animation, From The New World)
Script and Series Composition: Takao Yoshioka (Working'!!, Boarding School Juliet)
Character Design: Haruko Iizuka (Inu x Boku SS, Little Busters!)
Music: Masaru Yokoyama (Yamada-kun and The Seven Witches)
Studio: CloverWorks 

Aniplex has formally opened the official site and Twitter account for the anime adaptation and has also released the first key visual for the anime, embedded below:

Daisuke Hagiwara began drawing Horimiya based on original author HERO's 4-koma romantic comedy manga in Square Enix's GFantasy in October 2011. Yen Press licensed the manga in March 2015 and released the 14th volume on July 21st of this year. The series has also been released in multiple languages internationally, with the official anime's website noting that the manga now has 5.7 million copies in circulation.

The synopsis for Horimiya follows below:

Admired at school for her friendly attitude and academic achievements, high school student Kyouko Hori has been hiding another side to herself. With her parents often away from home due to work, Hori also has to look after her younger brother and do the housework, leaving no opportunities to make friends and socialize outside of school. Meanwhile, Izumi Miyamura is seen as a brooding, glasses-wearing, otaku. In reality, he is a gentle person hopeless at studying. He also has nine piercings hidden behind his long hair and a tattoo along his back and left shoulder.

By sheer happenstance, Hori and Miyamura cross paths outside of school—neither looking as the other expects. These seemingly polar opposites become fast friends, sharing with each other a side of themselves they have never shown to anyone else.

SOURCES: Comic Natalie and PRTIMES