Loving Summer Sky is a Manga/Manhwa/Manhua in english language, School Life series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Baek Gihu, who loves the sky more than people, takes pictures of the sky with his camera. One summer day, a girl named "Haneul"—her name means "Sky"—transfers to his class and sits in the seat next to him.