Confusing Ending

After really enjoying the story and the couple, getting to Episode 22 and being left so confused was extremely annoying. I watched Episode 22 twice because it is so hard to understand. Very disappointing after being so invested in the story and the couple to have such a baffling ending. ? They could have solved a lot of confusion with a simple “2 years Later” or something like that. The ending was missing an engagement ring too. After he told her how he felt he should have pulled out a ring.

Episode 12 Question

In episode twelve, they are at an aquarium then she goes home and is lying in bed looking at a ceiling projection of aquarium scene/water. I would love that projector. I have searched online but haven’t found one with the aquarium scene. It’s easy to find ceiling projector with plain water or fake looking fish. I haven’t found one with realistic sea life. Wondering if it’s a real ceiling projector. Does anyone know how I can buy one just like that? Any help is appreciated. Please share shopping link if possible.