This came to my mind while walking in the subway station after school, so I immediately wrote it down on my phone.
A 15-year-old girl met a 22-year-old office worker (?) Who confessed to her in the subway station. They made an agreement and started a love test.
Her: Does he really love me? Can he stay with me until one of us dies?
Him: Maybe I have something to hide from you, but this is not what I thought... I will wait for you until you become an adult, and we will be together...