SILKS-017 count down

Nitta and Okazaki are colleagues who sit next to each other. They have feelings for each other, but without confessing anything, Nitta is transferred and his last day at work is tomorrow. With little time left, the two make a promise to have dinner together. However, due to Okazaki's mistake, they have to work overtime, and the promise is ruined... However, just as Okazaki is feeling down, Nitta, who was supposed to have left work, returns to the office...?!