My only major gripe with this game has been "Mina's thoughts", for some reason the translator decided to have what Mina is thinking in the moment always be in past tense, making parts of her route super awkward to read. When she speaks she's normal but when she's thinking she's suddenly in past tense even whilst thinking about future events. Edit: They stop doing it where it doesn't belong after a while, by which I mean when she's speaking about current/future events, but it is a thing that goes on for quite a while in her route. Edit2: turns out it was minutes away from the ending, I suppose it was probably because they translated it soon after the prologue or something like that, luckily most of the second half of her route has her speaking instead of thinking, so it's far more legible.
Regarding the comment about Ayaka's gallery missing a scene
If the missing Ayaka scene refers to the final slot in Ayaka's gallery just complete her Append route once(to unlock a comedic end with a ichi/ria/sylvia three some scene) then load a save where the choice that only lets you select one of the options was and choose the other option it should now be unlocked and let you access Ayaka's final scene, if the missing scene comment is referring to something else, sorry no clue.