Tomonari Mashima

Tomonari Mashima is an English teacher and the homeroom teacher of class 1-A.

Appearance
Tomonari is a middle-aged man of average height with gray hair and green eyes.

Personality
Tomonari is a man who takes his job seriously.

History
He was seen during the desert island survival test and announced the rules of the events.

Trivia

 * In one of the illustrations for volume 10 of the light novel, his first name (智也) is spelled as Tomonari (ともなり). However, on the official website, it is spelled differently as Tomoya (ともや). This article uses the spelling from the light novel but it can be subjected to change in the future.