CHAPTER 1:

Protagonist:
- Van Thac: About 1m7 tall, normal figure, short hair, no outstanding facial features. The back is usually kept straight to play the trumpet well. Simple mind and personality, enthusiastic but a bit clumsy. When confused, he will use his thumb to gently scratch behind the ear.
- Ngoc Lam: About 1.55 meters tall, with a thin body, and slightly curly shoulder-length hair. Her face looks calm, but her eyes have slightly dark circles due to studying too much. Quiet, modest personality, does not like being touched and crowds. When sad or thinking, she will tilt her head slightly to the left, ambidextrous. Sometimes reacts unconsciously to musical instruments.

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C. high school, the lunch break.

Usually, grade 10 and 11 students only study a session a day, except for Monday, with two sessions. Meanwhile, grade 12 students have to be at school in two sessions on weekdays. 
It's a cool day today. On the schoolyard under the golden light of autumn, a few students are lying on the bench, some others are sitting under the trees, and some are playing basketball. Inside the classrooms, a few are studying or taking a nap.

A male student is slightly running to the back of a building. He's holding an old wooden box. The name tag on his chest is written "Van Thạc- Class 10D5" on it. He's running toward the lobby behind the building where his class is located. That was a narrow lobby between the building and the 2-metre brick fence. Two lines of short trees are planted on two edges of the walkway. Class 10D5 is on the ground floor with three doors, and one faces the lobby. The class has an afternoon session today, but Van Thac came too early. It's two hours before the time.

Van Thac is about 170cm, he's got the typical short hairstyle of male students. His face looks ordinary, but there is some kind of enthusiasm and positivity in his aura. he puts the wooden box of the brick-raised bed and takes a trumpet out of it. Van Thac is instructed to play the trumpet by teachers from the Conservatory, so now he's going over the lesson he had this morning.

When he is immersing himself in music, suddenly, a voice interrupts his mood.
"Too noisy!"

Van Thac stops to look around. It turns out the complaint is from his class. A girl walks out of the class. He recognizes her- Ngoc Lam, one of the best students in grade 10. It's rumoured that she had her hair cut to save time for studying, and her eyes always look sleepy. She doesn't have many friends in the class because she's timid and cold. He usually sees her study most of the time she has. Ngoc Lam has a brother. He is also a student of this school, grade 11. Her dad is a master of a martial class, and her brother is his assistant.
Van Thac doesn't care about her family background. After all, Ngoc Lam is modest and calm. She never picks up an argument with anyone. However, he doesn't like being interrupted.

"No!"- He said promptly- "You'd better go to the school's napping room to take a nap. I'm practising."

There are two large vacant rooms in the school, so they use them for students to take a rest at noon- one is for female students, another is for males. A lot of students use those rooms, so Van Thac sees no problem if Ngoc Lam uses the female napping room. Let alone grade 10 and 11 students don't have the morning session. He answers Ngoc Lam, then gets back to practising.

Ngoc Lam stares at his gestures with the trumpet. At first glance, she knows he is well-schooled, but after a while, she starts to frown. The melody is like a drone with its monotone at every bar he plays. Each second passes, and even when Van Thac is immersed in the song, Ngoc Lam has to raise her voice in two minutes.

"Hey" - She calls
"What else?" Van Thac gets annoyed
"You play it wrong."
Ngọc Lam's words make Thac feel insulted.
"What's wrong with you? Lam?" - He says "If you want to shoo me off to continue your nap, you should say it! But I'm not going anywhere! How can I find a play to practise in this school?"
"You play it wrong" - Ngoc Lam repeats, slow and clear.
"What's wrong here? Why don't you play it correctly?"- Says Van Thac, then he shows the trumpet in front of her.