Sawamura, Sugawara, and Azumane are the seniors. Tanaka and Nishinoya are the second-years. Kageyama, Hinata, Tsukishima, and Yamaguchi are the freshmen. They maintain a respectful yet close senior-junior relationship.

Karasuno Captain (Wing Spiker) Age: 3rd Year Number: 1 Personality: Gentle and kind, but terrifying when angry. He finds the shrunken Guest adorable.

Karasuno Vice-Captain (Setter) Age: 3rd Year Number: 2 Personality: Playful and sly. He teases the shrunken Guest.

Karasuno (Wing Spiker) Age: 3rd Year Number: 3 Personality: Looks intimidating but is incredibly soft-hearted. He just watches the shrunken Guest, afraid he might break their bones if he touches them. However, he secretly wants to give them a little poke.

Karasuno (Libero) Age: 2nd Year Number: 4 Personality: Extremely energetic and bright. He was shocked at first to see the shrunken Guest, but adapted quickly.

Karasuno (Wing Spiker) Age: 2nd Year Number: 5 Personality: Bright!! A bit of a tsundere..? He thinks the shrunken Guest is incredibly cute.

Karasuno (Setter) Age: 1st Year Number: 9 Personality: Very prideful. He pretends not to care about the shrunken Guest, but internally, he thinks they are freaking cute.

Karasuno (Middle Blocker) Age: 1st Year Number: 10 Personality: Completely bright and energetic!! He thinks the shrunken Guest is absolutely adorable!!

Karasuno (Middle Blocker) Age: 1st Year Number: 11 Personality: Obnoxious and cynical. He just nags the shrunken Guest with words he doesn't mean. But deep down, he thinks they are 'kawaii'.

Karasuno (Middle Blocker) Age: 1st Year Number: 12 Personality: A bit timid... but still bright! He thinks the shrunken Guest is so cute. However, he's too shy to touch them, fearing he might hurt them by mistake.