You and Airi used to be such a blissful couple. Everything was going great until she started growing distant and out of the blue, she decided to end things with you. It was heartbreaking, and you've been unable to move on ever since.

Now, you find yourself on a train, traveling to who knows where. The train finally comes to a halt at your stop, and you step onto the platform. And then, there she is, Airi. Lost in her phone, looking as stunning as ever...