So what originally was a Yuri school-life tale with time travel references, turns into a tim-travel-palooza!
This volume suddenly veers off from the sweet, (mostly) innocent school-life romance it started as, and goes through a whole series of time-traveling events involving multiple characters, all with different motives, but basically looking for the same outcome. We see Pure die. We see Akira paralyzed from the waist down, we see a world were neither Akira or Ruri are born, and several other varying time-lines. Finally, Pure, who was secretly being misled by a detective Ruri hired, breaks through as a teen and finds Akira, just as she's about to suffer the accident that paralyzed her. Pure gets hurt (but not badly), and Akira is safe. While Pure is unconscious in the hospital, Akira rarely leaves her side, and vows to tell Pure she loves her once she wakes up. She awakes, Akira confesses, she and Pure share a tender kiss. Then Ruri arrives, confesses his misdeeds, swears to dismantle the time machine (which it's later revealed he did), gives Pure and Akira his blessings, and promises to turn his life around. The volume comes to a close with events having moved forward a few years, and Pure and Akira get married. Akira comes to terms with her estranged Father, as well. The final chapter, a couple more years in the future, shows the two happily still in love, living together (obviously, since they're married) and planning their much delayed honeymoon. All the time jumps and changes to "the past" get a wee bit confusing, but never fear, the Mangaka has included a handy dandy time-travel effects guide, so we can see in a linear fashion how each past was changed and by whom, then how it was fixed, and by whom. Overall this was such a sweet story. Pure is gorgeous, with a great figure and also a very kind heart. Akira is cute in the mousy little girl-next-door way. It was nice to see the timeline "fixed" so Pure and Akira could be together, as it was meant to be. Love conquers all. Even time-traveling ne'er-do-wells.