I don't wanna be ungrateful but the gallery consists of exactly 5 pictures which are simply magnified when clicked on. Even the coices of these individual pics are debatable to be representative gallery objects (other variants are hotter and have more going on).
No variants, no slideshow, no replay? Are there plans to expand that?

It's literally the first update, most VNs don't have a gallery period, and the ones that do usually get it in their 5-8 update just be patient maybe the developer is not great at coding or just wanted to release something for us to play instead of working on a perfect gallery for another month or two.