Yamada to Kase-san.

After the occasions of the initial five volumes of the Kase-san to... series, Kase-san and Yamada are presently college understudies. Kase-san is putting in a lot of effort at her university while Yamada is putting in a lot of effort in her horticulture program. They will always make time for one another, despite the long train ride between their schools and the frantic new schedules to plan around.