Using a protractor by an engineer in the old schoolUsing a protractor by an engineer in the old school
Soviet single-engine fighter at the airfield after the battleSoviet single-engine fighter at the airfield after the battle
An empty school classroom with desks and a blackboardAn empty school classroom with desks and a blackboard
Vocaloids miku and luka in school uniform and with guitarsVocaloids Miku and Luka in school uniform and with guitars