Natsu, Kimi Ga Saku.

A collection of short stories. The particular title story:Shinobu were raised in a town so little that he didn’t even have any kind of classmates in elementary college. Without any friends his age group, he spent his period learning about flowers with a regional horticulture expert. Now that she has moved away to a town, he still sticks in order to himself, since he never truly learned how to make friends. Which is, with the exception of Yukihito, who emerged up to him one day plus became his friend. The problem is, now Yukihito indicates the world to Shinobu, and doesn’t know what to do about this.