Can a Boy-Girl Friendship Survive? Danjo no Yuujou wa Seiritsu suru? (Iya, Shinai!!) English Subbed

Childhood BFFs Himari and Yuu’s vow of friendship hits turbulence when Yuu reunites with his first crush in high school. Himari, who’s never known the fuzzy warmth of a crush, now must confront her feelings. Their shared dreams and peaceful days as a twosome gardening club are tested in this tale of love, flowers, and growing pains!
(Source: Crunchyroll, edited)