At last, "You" were able to say i love you. After saying the last goodbye to him

This is beautiful. 

A small detail I personally love is how every day, your character ends their conversations with "See you tomorrow." You get used to them saying it, even though your brother doesn't say it back. Then on the last day, expecting those same words, you get hit with "Bye." instead. Not from your character, but from the brother. Like he knew he wasn't going to see him tomorrow.

Beautiful game.

Wow. This game feels personal. The writing feels kind of like a form of poetry mixed with authentic conversation. I was going to criticize the lack of capital letters and punctuation, but I feel like that was intentional. The game looked great while staying simple, and I don't think I've played a game that manages to be this good with this little gameplay. Only gameplay critiques are that if you don't skip text, it can take a while for the z prompt to appear. The text reading out also looks a bit strange if there are multiple lines. I feel like the text would look great with a few more effects like speed and maybe a little shaking, but the way it looks isn't what this game is about. Amazing story, great job.