Gone Gyaru Part 1 (Pixiv Fanbox)

Class Representative Saichi tolerates no nonsense, enforcing school policies the best he can uncaring of the scorn it earns him with his classmates. He has no friends, but still finds pride and happiness in his school duties. A pride that would soon be broken. After confiscating a phone from the leader of a gyaru girl gang, Saichi is forced to endure a gyaru makeover. Embarrassed and hurt that none of his classmates came to his aid, Saichi seeks refuge in the nurses office: a decision that will change his life forever.