This is a story about two ordinary people, just like anyone else. The girl's name is Rio Kuramachi. Her relationship with her boyfriend isn't going so well, and he's currently on a business trip. The guy's name is Kazuhiro. He has a crush on a girl at his company. They're childhood friends who reunited after a long time and started hanging out again, occasionally sleeping together. Spending so much time together feels natural, but there are moments when their feelings start to fade. They don't want to be just casual sex partners, and they're not in a committed relationship either. They're just childhood friends, right? Or maybe it's something more... "Shin-yu," as they call it. As time passes, they try to understand each other's feelings, but their ambiguous relationship continues. Amidst this uncertainty, their emotions begin to shift. They each harbor different desires, and they wonder how they'll navigate this complex situation. The choice for their future is right around the corner... What if things had gone differently back then? Which choice was the right one? These are moments of decision that everyone experiences. It's bittersweet, painful, but ultimately heartwarming. It's okay to make mistakes or take the long way around. As long as they keep growing up step by step, that's all that matters. This is the first installment in the highly anticipated Scenario Selection series! We delve into the thoughts and feelings of the two characters at that time and how they arrived at this point. Due to the incredibly delicate and nuanced portrayal in the script, some aspects may not be fully conveyed in the video. We highly recommend watching both the original script and the video together for a complete understanding.