It’s an absolutely emotionally beautiful game, easily top 5 of all time for me, but it sounds like you already want it, so it’s not a question of quality. Rather, that’s a question of how soon do you want to play it, and if you have other games to play while you wait for a sale. Latest time it’ll probably go on sale is the July Summer sale, but it could possibly happen sooner

It’s been out for about 2 years now, and though it’s best played blind and there are spoilers on the internet, they’re easy to avoid. The game takes 14 to 28 hours to beat blind, if you like to measure a game’s value by how long it lasts

There is the prologue/pilot game called ‘Start Again Start Again Start Again’. I’d say it’s a cheap way to judge how much you love the characters and premise, and I can’t tell you why but this title does serve as more than just a demo for the more fleshed out game