Rian, yang selalu mengamati tiap postingan sahabatnya, tak bisa menahan rasa penasaran. Ia menelusuri kembali setiap foto, caption, dan komentar yang melibatkan . Di balik feed yang tampak bahagia, Rian menemukan percakapan singkat antara Natsu dan Dito:

The story unfolds over a sweltering summer weekend. Ryo is called away on an emergency business trip, leaving Saki alone in the newly purchased apartment they plan to marry in. He asks Takumi to "keep an eye on her"—a favor that begins with dropping off groceries and ends with crossed lines.