The New Semester! A New Dream and A New Threat!

At the start of the second semester, mysterious dark seeds start planting themselves across the city. Meanwhile, as Miss Shamour looks after Lock, who had reverted to the form of a fairy following his defeat, Haruka befriends her classmate, Hanae, who had been tending to the school's gardens, encouraging her to become a flower coordinator.

Synopsis excerpt via Kitsu.