Yuri and Marie met by fate on the day of the school entrance ceremony and immediately hit it off. After two years, the two were on their way to becoming more than just best friends, but they were too afraid of the changes in their current relationship to go any further. But then one day, Marie could no longer contain her feelings for Yuri and poured them out in a love letter. Now a big step is being taken towards the Mirai of their relationship. After the drama ends, a lesbian documentary of the two, who are also extremely close in private, will be included.