Gravitation - Season 1 Episode 5 Winding Road

When Hiro and Shuichi are taking a walk in the park after there rehearsal, they notice that two older men and trying to have there way with a young lady, and they save her with some cocky insults etc. After wards she tells both of them shes looking for someone very important to her. Hiro offers to get her in a hotel, and Shuichi decides to leave to go to Yuki's. Although, when he gets there, he does not find Yuki, but his brother, Tatsuha. They both get along very well, because they both have a huge obsession with the Lead Vocalist from Nittle Grasper. Then Tatsuha gets a little to teasing and gets to close to Shuichi, and Yuki walks in. Later on Shuichi finds out that Ayaka is Yuki's fiancee!. It only gets worse when the Bad Luck concert is coming very soon. When at the concert Shuichi see's Yuki and Ayaka in the crowd, and cant help but scream in between the song, YUKI IS MINE! after seeing that Shuichi does have self courage after all, he tells Shuichi he will be his lover.