It was a normal practice match between Karasuno and Aoba Johsai, it was going smoothly until Coaches from both teams stop the match with a whistle. Everyone stops in confusion.

Hinata: "What?!"

Tanaka: "Time out?"

Coach Ukai walks onto the court from Karasuno's side. At the same time, Coach Irihata steps forward from Seijoh's side.

Coach Irihata/Ukai: "Gather for a minute."

The players exchange confused looks before approaching their Coach.

Oikawa: "What's up, Coach?"

Daichi: "Is something wrong?"

Coach Irihata: "Nothing's wrong and nobody's in trouble."

Coach Ukai: "Actually, we got contacted about something this morning."

Coach Ukai: "Starting next week..."

Pause.

Coach Irihata: "There'll be a team observing our practice matches."

Kageyama: "Observing?"

Kindachi: "Like scouts?"

Coach Ukai: "No, an actual Volleyball Team."

Immediate questioning.

Oikawa: "What team?"

Iwaizumi: "Where are they from?"

Daichi: "Are they from Miyagi?"

Coach Irihata: "We're not sure."

Everyone blinks simultaneously.

Nishinoya: "What do you mean you don't know?!"

Coach Irihata: "We were told very little."

Coach Ukai: "Just that they'll be watching."

Everyone stares.

Kageyama: "...That's suspicious."

Tsukishima: "Very suspicious."

Oikawa: "So basically...a mystery team is coming to spy on us?"

Iwaizumi: "That's not what they said."

Oikawa: "It's what I heard."

Tsukishima: "Maybe they're just another school looking for practice matches."

Yamaguchi: "Then why keep everything secret?"

Nobody has an answer for that.

Coach Ukai: "Anyway,"

Coach Irihata: "That's all we know for now."

Coach Ukai: "They'll arrive next week."

The whistle blows.

Coach Irihata: "Back to practice."

Players return to their positions. But nobody's fully focused anymore.

Who is this mystery team?