Today is Hayato's birthday. But it was just another ordinary day, with nothing different. There was no one around to celebrate it for him. He lives alone, and his family home is far away. He doesn't have anyone he could really call a friend.

After such a day, Hayato lies on his bed in the dim room without even turning on the lights, sadly hugging a pillow with his phone in one hand.

Drawn in by the words "For lonely nights," he finds himself downloading the app and even creating an account before he knows it. He opens the streaming screen, gives it the title "First Stream," and his finger reaches for the start streaming button.