Doukyonin wa Hiza, Tokidoki, Atama no Ue.

Synopsis

Kawase has suggested that Subaru start working on a new series, but Subaru can't come up with any good ideas. So, at Kawase's recommendation, he decides to try taking a trip somewhere for a change of pace. As he's thinking about where to go, he suddenly notices his mother's flower garden in the yard, which she had planted as a gift to him using seeds and seedlings from places she'd traveled to. Each plant is labeled with the location it was acquired from, but the space labeled "Tokushima" has nothing planted in it... so Subaru decides to visit Tokushima.

(Source: Crunchyroll)