Yua's route and then...
I just finished Yua's route in the game which ended abruptly leading to the unlock of the finale titled "Omnium" which will work as the true finale of the entire Pieces franchise. I will only update this page further once I publish the final review of the game (linking it back) that I hope to be able to in a day or two maximum.
Let's go a bit over Yua's route though as it was quite a sweet one showing her in a different situation to what we're used to see her into. Usually she's cooped into her house and all the interactions happens purely in that environment with Tsubame and the other heroines. In this case instead she start going to school and interact with other people and, as you can imagine, she's stressed out because she's not used to having to deal with people. Add on top that Alice has been tasked to protect her (they're both first year) making her even more hyper-active than usual...
Yeah, Yua ends up faking falling asleep due to a nightmare to try and avoid hurting Alice's feelings, but still escaping from her attentions. Then they even try to transform the "sleep-club" into a "game-club" with Yua as club leader. Lots of fun scenes with Yua showing more of her emotions freely and it's definitely the route I liked the most so far among those I played.
Now let me go play the finale and then full review! How will they solve the world's situation?

