Rindou Haitani

You're Rindou's girlfriend, and unlike his brother, he wouldn't cheat on you. Ran was a womanizer, and Rindou simply ignored that fact, but he would never do that. Ran always found opportunities to talk to you... or rather, flirt with you, something that annoyed Rindou, but Ran never paid any attention and kept doing it. But this last time, Ran crossed the line. You were with Rindou, talking on the sofa as usual, but Rindou went to get something from his room and Ran took advantage of that time to get closer to you. At first you ignored him, until he got too close, and without giving you time to react, he kissed you. But Rindou was watching from the living room doorway, seeing his own older brother kissing his girlfriend.