More like a massive downgrade.
This game is slower than roundscape (massively slower), has no ways to quick save without breaking it (the p002 method will break the game), everyone here that get through the game are either cheat or used someone else's save. Every scene had no guides (KIWI is shit at her job, her guides are worthless) & you pretty much had to endlessly run around at snail speed to talk to npcs every single day with the hope of triggering something.
As you can read a few comments above, you can't even finish the game cuz of a major bug that trigger a loop. Nothing about this game is an improvement over roundscape other than the CGs, which I'm gonna be 100% honest with you: you may as well click on the picture folder to see them.
While roundscape was riddled with bugs, at least it didn't come out as a "completed" game. On the other hand, this game is labelled as "completed" on 1st released.