Moral of the story, don’t listen to your friend who only knows your side of the story, neither listen to the dude who wants to get in your pants. I get she was jealous about Ayaka, but she didn’t even know her nor her feelings for mc. She perfectly knew that the dude she « experimented cheating » with has feelings for her. She is in the wrong here. Mc had his fault too, but she is way worse. From mc’s viewpoint, Ayaka was a friend he spend time with. Reina was his gf. The dude she went on a date with confessed to her, she went with him. She cheated, while mc didn’t. End of the story. That Natsuki bitch, instead of throwing sharp shit to mc, should have apologized to Reina for the wrong advices she gave to her.
Thanks for the translation