Wow, that's wholesome. Can't help but think how nice it'd be if other renpy vn devs would read through it and remember how attention to details looks like (of course, i'd never blame them if it's simply too much work to be done, gamedev and all that). Interface, gallery, journal and bebebese voicing are really helping to enjoy a game. There's probably just that one minor thing i disliked…
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You see, i like to read through renpy-made vn at ~20% text speed, it's just comfortable, but yawning and noises like that are really slow to appear on screen, so i'd suggest to replace it with something like "ya-a-a-a-a-a-awn" and "m-m-m-m-f" respectively, so it looks better with slower speed.
Keep up the good work!