The everlasting moonlight of butterfly's love

The main character name is Mira. Her friends are Ren, Rosy, Justin, grace and luis. Its the intervel and they were playing a game. For whomever the bootle points, he/she should say his/her crush. So luis spinned the bottle and it pointed towards Grace. She said he is none other than luis. Luis blushed and spinned the bottle. It pointed towards justin. He said Rosy. Rosy had no expression on her face. Then the bottle finally pointed to Mira. She said that its Ren. Ren just stared into her. Then the bell rang and class started. Next day, the teacher invited the new student to the class. Her name is Anna. Mira got bad vibes from her. She shouted “ Ren, can i sit beside you? ". Ren agreed and asked Mira to sit somewhere else. Then Rosy brought a chair and made Rosy to sit beside her. It's lunch break and everyone sat in the canteen. Then Ren said “ Anna is my childhood bestfriend ". Anna said “ hi everyone, let's be friends ". No one paid much attention to her. Anna just remained quite. Then she asked Ren if they could be in a relationship ". But Ren said “ No, i already have Mira. She is perfect for me ". Hearing this Mira looked at him shocked and stared deeply into him. Anna stood up angrily and said “ I never thought you could do this. In what angle is she perfect! ". Mira felt inconsolable. Ren said “ I dont know why but when she said she had crush on me, I felt butterflies in my stomach. Infact, she is pretty in every angle I see her, eventually more than you. I never thought you could say such things ". Anna went away from there embarrassed. Next day, she asked Ren if they could add Casper in their group. Ren denied as he is the ex of Mira. Anna went away from there. She used to sit with him and ignore others. On valentines day, all the friends thought to go for the amusement park. At night time, when most of the people went away, the ferris wheel stopped. Mira and others were on the top. The owner said that its a mechanical issue and made everyone get down through the ladder. Everyone had get down and then Anna and Casper popped infront of them. Then suddenly everyone lost their consciousness except Mira. Anna said “ I am giving you a chance. Try hard as possible to save your Ren ". Mira just remained shock. Then Anna took an iron rod and bet Ren on his head tightly. Mira was about to go to him but Casper stoped her and was harrasing her sexually. Mira is just crying and cant do anything. Then Anna continued to beat Ren on his head. Blood flowed from his head but he is unconscious. Then Anna came to Mira and bet her tightly on head. Mira fell on the ground. Next day when everyone woke up, they found themselves in a hospital. They searched for others and they met together in a place. Mira's head is bandaged. Then they entered in a room where they found Ren with Anna sitting beside him. Casper is also present with them. Seeing Mira, Casper went to her worridly and acted like he is concerned. Mira just left him and went to Ren. She is very worried to see him in this state. Ren said “ everyone dont worry, I am fine ". Luis said “ how can we not get worried if doctor said that you lost your past 2 years memory! ". Ren said “ its sad. I know that. But lets not talk about that. And however lets get together now. I just remembered that i had a girlfriend ". Mira felt relieved after hearing that Ren remembered her. Then Ren said “ I hope we stay together like this forever. I will never forget you. Viens in my heart still stayed strong due to your affection, Anna ".