When a good classmate appeared in Arthur's class 7 years later who became his best friend, Arthur thought that he had gone to heaven and they would always be together, until Mark abruptly said: "I thought it would be cool to relax, just to fly a plane.". Arthur looked sharply at Mark from this, confused, not understanding what he was getting at. Arthur tilted his head to the side.

Are you hinting that you will go on vacation in the summer?

He said with a faint smile. But Mark shook his head and said he was leaving forever. Arthur's smile faltered, and he looked up at the sky.

All this week, until the summer holidays came, Arthur tried in every possible way to dissuade Mark.

It's very far away and it's not easy to get there.

What if some idiot takes a hostage and hijacks a plane?

if the plane falls into the blue sea?

but Mark also found excuses for all this. Apparently he was serious. It was after school. Arthur sat down on a park bench and sighed, lowering his head down and resting his face on his palms.

Well have a good trip, Okay, let's fly.