Jealousy of her best friend and the ending

Arina Hashimoto is a beautiful schoolgirl, she is perfect and is idolized by many people, which is the complete opposite of Arina's best friend. She was jealous and asked her male friends for help. They planned to rape her, record the video, and then humiliate Arina. It was all because of jealousy and Arina was truly shocked when what happened to her was the mastermind of her best friend.