Yukawa-san, who works in a different department, and Mizuki-san, who became friends over a trivial reason to go out for meals together. They always exchanged messages by putting notes in each other's coat pockets... "Will it all come to an end when the weather gets warmer...?" The sweet and cute love story between the gentle Yukawa-san and the straightforward Mizuki-san unfolds...?! A heartwarming yuri tale that tightens the chest.