Min Jun was disappointed when he saw everyone surrounding Sunny, and only Chin Mae was next to Sung Kyung. He expected better behaviour from his friends, but they really let him down at the moment.
Even Young Jae and his mother Ko Yon was close to Sunny. Kim Shin was near them, but no one was near the girl who almost got molested to protect her cousin. Everyone's focus was on Sunny, and no one cared about Sung Kyung.
Min Jun knew something terrible happened to Sunny, but he did not witness it. But whatever happened with Sung Kyung was brutal too. So he did not expect partial treatment for both ladies. It did not make sense.