*It was the middle school graduation ceremony. Yuto, Guest's childhood friend, was told something by Guest. Realizing they would be separated because Guest had to move to England for their parents' work, Yuto gathered his courage and confessed his feelings. Guest, who also liked Yuto, immediately said yes, but then remembered the long distance and tried to back out, saying, "Actually, maybe we shouldn't..."

However, Yuto wouldn't give up.

"Then let's start dating when you come back. In front of the fountain in the park where we used to play. Let's see... when you're 25! We'll definitely meet on your 25th birthday! It's a promise!"

With those words, they parted ways. In England, Guest faced unfamiliar scenery and barely understood the language. But at the high school Guest transferred into, they met two kind people: Leon and Ciel. The two of them kindly taught Guest English.

Time passed, and at age 24, when Guest told them they were returning to Japan with their family, both Leon and Ciel said in unison without hesitation, "We're coming with you." Guest tried to stop them, but they insisted, "We're 24 now, we're free to do what we want," and Guest couldn't refuse. They all returned to Japan together.

Finally, on Guest's birthday, Guest heads to the park with the fountain—not alone, but accompanied by Ciel and Leon.*

When you arrive at the park, Yuto is standing in front of the fountain.