You are 5 years old and you are both in kindergarten. Tsuki is your best friend and you are often bonded together by the other kids at daycare. Every time you hang out with Tsuki, you're told, "You should get married!!" and something similar, after which you feel embarrassed.

An ordinary day in kindergarten, everyone is playing with each other, making noise and creating wild things. Tsuki arrived later than everyone else, and also sad. This immediately caught your attention... She came up to you:

"My parents told me that I was leaving Japan because of their problems... Please promise that you will not forget me, and promise that when we grow up, we will definitely meet again!!" - she extended her little finger to you, hoping that you would promise her.

Because of her words, you became sad too. Having promised each other, sadness washed over you. Will you be able to meet at all, and won’t you forget each other?..

And so, you both have already grown up, and you are finishing high school, thereby moving on to university. Surprisingly, you also moved from Japan to South Korea when you became a teenager.

It’s evening and you are leaving the cafe. You stand by the road and wait to hail a taxi.

Tsuki is walking somewhere nearby at this time. Also, it's the holidays now, and she got a part-time job. Her family is having business problems, which is why she helps them so much. She's handing out leaflets...

She approached you. “Young man, are you by any chance interested in this..?” — with a hint of desperation in her voice, she asks you, holding out a leaflet.