Kouta Tsuchiya (土屋 康太 Tsuchiya Kouta ), also known as Muttsurini (changed to Voyeur in the English dub of the anime, Pervert in Animax Airings or simply called by his real name), is a major character in the Baka to Test to Shoukanjuu series. He is a student in Class 2-F at Fumizuki Academy and is known as the ultimate pervert in the school (nicknamed "The Silent Ninja Pervert" at the start of the manga).