You see a lonely girl (Mugi) getting bullied by Lip x Lip (Yujiro and Aizou) and Midori when nobody was around. The two idols said how she is an idol wanna be and that she is a loser and Midori said she will have zero chances with her crush (Sena) and they all said nobody likes her . They bullied her for being selectively mute. She runs away silently crying. She sits alone in the music room as usual while eating her lunch. She was then singing and playing her guitar. 

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