After the comment about propose... I need it too. I thought that this game has not endings, it just goes straight, and now I see it??? I NEED IT
the game is complete and has a full ending! if you haven't unlocked all images in the gallery, you haven't finished the game. there should be an animation on the title screen that signals what you need to click to continue the story---there's also a walkthrough linked on the game page if you need more help :)