This story is mainly about 3 Persons: Yuki (MC 1), Souko (FMC) and Oda-senpai (MC 2).
Yuki and Souko are childhood friends and started to date in middle school. Souko is one year older than Yuki, but this isn't really important to the story, anyway they had their first time together when Yuki was in her last year of middle school and apparently they didn't know about contraception and she got pregnant. Unable to accept it, she aborted it, which leads to her parents divorce and she decided to move away, without contacting Yuki even once!(B!tch) 2 Years later in a different city and HS she met some dude named Oda-senpai, which confessed to her and after turning down serval guys because she's still heartbroken of Yuki, she decided to give the serious Oda-senpai a shot and they dated for a year without problems. Oda decided to propose for marriage even though they were still at base 1 of their relationship. After going to his house for the first time she met Yuki, which is now Oda's stepbrother since their parents married. With conflicted feelings for all three the story develops. Just filler stuff 'come back to me' and 'ohh no i can't' etc., nothing worth mentioning.
Yuki already had a new gf, even though he told her, that he probably doesn't like her much, but she turns out to be a crazy b!tch and is mad at Souko for stealing Yuki, which broke off with her. So she decided to push her on the street at a traffic light and Oda-senpai had to jump in to save her, which leads to his injury and hospitalization. After that Souko said she needed to be there for Oda and turned Yuki down.
After some talking Oda said Souko should go to Yuki and they are supposed to meet in school, where Souko wanted to reconfirm her feelings for him. Yuki's ex-gf was still shocked about the incident (What did she think was gonna happen?) and was cowering in a corner, after talking to Yuki. She spontaneously decided to jump out of the window, where Yuki interfered and fell himself out.
Now fast forward around 3 years we see Souko sitting at Yuki's bed at the hospital ( He is in coma since then) and she said how she wishes him to wake up, so they can be together again and miraculously <.<. he wakes up in this right moment. He asked her why she wanted to meet him in school and that's it. That is basically the whole story.
This went longer than I expected and since english isn't my native language and it is 2 am here, so I apologize for any mistakes, but I hope I could you help out, whether you decided it to read or not now.
For anyone interested, I rated it 5 Stars.