The Last Train(2015)

Saishuu Densha

Natsume, a systems engineer has missed the last train home, but wouldn't you know, Miki, an office worker also missed the last train. They both decide to go search for a hotel, but for some reason, they need to stay in the same room?! For Natsume whose face is always buried in front of his computer, this is one of the biggest hurdles he's ever faced, but the calm and friendly Miki convinces him with a smile that it'll be fine. The next morning, Miki tells Natsume, "I want to see you again." How will Natsume respond...?

(Source: MangaPlaza)