One other thing I also just found is that the gallery doesn't stop you from continuing to click the next arrow which leads to a grid overflow exception.
Viewing post in Version 2.5 save/load menu causes exception on Mac
https://vnstudioelan.com/games/highwayblossoms/highway-blossoms-adult-patch/
Be sure to grab the newest adult patch from our website! It'll fix most of those issues. We'll fix the gallery arrow glitch in future patch, but thank you for bringing that to our attention.