How Minho managed to get a high score was because of Nickhun's good luck kiss.   Warning:  ! boyxboy!

Minho the son of a wealthy musician moves to Jeolla, a rural city in south Korea. As a extremely talented student Minho is welcome by the students as well as the teachers, but still remains a silent and lonely student. Which is the the result of his tragic childhood with belief that his father was dead and having numerous conflicts with his mother; Minho never really felt loved. One day Minho is interrupted by fellow classmate Taemin on the bus. Minho soon fall

The heart only beats for you, but your ears are overflowing with lustful words and you are completely deaf to my innocent whispers. You call yourself a man? You’re alone. And still, even after the whole world has turned against you – friend that I’ve known my whole life – who will you turn to other than me? You home wrecker. 

How Nickhun and Minho's friendship (or maybe something else) develops after that Idol Army episode.   Warning:  ! Boyxboy!