Read manga: Danjo No Yujou Wa Seiritsu Suru? (Iya, Shinai!!)

manga
Summary:

At a rural junior high school, a man and a woman vowed an eternal friendship. The relationship between the two who became a fateful community toward one dream-two years have passed without any particular progress ...! Yuu Natsume, a flower-loving plant boy, and Inuzuka Himari, a girl who hasn't been in love for the first time yet, have been peacefully close friends in the gardening club with only two of them.