いつか落ちるこの刻で

If you could stop time for three minutes, what would you do?

Isa Hirakase, the self-proclaimed "fairy of time", had given me privilege to use the "time-stopping hourglass". What would I do with such a thing?

...This is the story of a week that she and I spent together.
The beginning of the long and short time spent with a girl who can stop time.