Hentai "Kiss Hug" is based on the eponymous tankobon with the authorship of "SuiheiSen" in December 2019. The story takes place in our days. The manga itself consists of several unrelated stories. 

Chizuru and Haru had been friends since childhood and regarded each other solely as brother and sister. However, as time went on, the children grew up to become grown-up boys and girls. Now Haru looks at his once best friend as an object for sex. He can't help it, because he's not exactly breathing for her for a long time...