Basically just decompile the game with a godot decompiler, open the decompiled output in godot (u'll have to use godot 3.6 in this case since the game hasn't been ported to godot 4), select a different release and export it
I would compile a version for ur OS but idk if I should be doing that maybe that'll be going too far
The dev is lazy in updating exclusive content, v1.78.2 the version before last still only got 5 waifu till Aqua from longs ago (at least from old v0.45 in my laptop). You can see the v2 shared from Shintomi, ??? after Aqua , I doubt he added more in the final version despite of a lot of placeholder arts. Here is v1.78.2 deluxe android if anyone wants it (I downloaded from other site, no need to ask other version)