Tokyo's rainy season is long and damp.
Toko Takanashi works at a publishing house, rides the train, and has meals with friends all on her own. On her way home, she even picks up two puddings without thinking, because Mahiru Amamiya is always waiting for her at home.
They have been together for more than three years. They argue about the color of the curtains, share a clear umbrella, and talk late into the night about what to have for breakfast the next day.
But little by little, Toko realizes that Mahiru never makes new friends, cannot remember recent events, and has never appeared in a single new photograph.
There are some things Toko knows better than anyone.
About that farewell, about eight months ago, and about why, even today, when she comes home, she still speaks to that familiar voice and says:
"I'm home."
