I can say that I enjoyed this film enough. The pacing and the acting all remind me very closely of Japanese movies and dramas I've watched in the past, so don't expect the liveliness that you might find in Thai series - there's none of that here other than the two main characters speaking the language. It's also VERY quiet - I'm pretty sure there's just a few moments where some OST can be heard, while everything else just has ambient sounds or is completely silent. The pacing is also pretty slow and meant for the viewer to take in all the details and the acting without rushing in. I can't recommend this if you're one who gets impatient or distracted easily!

The story itself is actually touching, although in its own sad way. Toey and Oat meet in Japan in a small town, both far away from their personal problems (Toey just broke up with his girlfriend after years of being together, Oat is on his last solo vacation before getting married). Since they're both so far away from their life in Thailand, the entire film feels almost dream-like, as if it was a fantasy rather than made of actual events, which is something that I liked a lot. This dreamy atmosphere is broken from time to time by real-life events and discoveries, which made me want Toey and Oat to keep being happy in a bubble of their own even more.
I don't want to say more than it's necessary as I believe that it's better to watch the film than have a review tell everything. All I want to add is that there are some themes and events that might not be everyone's cup of tea, so I can't recommend watching before bracing yourself in case you don't digest sensitive contents well. Overall it was pretty good, so I'd say you should give it a go!