Warning: This will have spoilers, truly I did not hold back because I absolutely love this demo. I am a monster with this paragraph I am so sorry.
Oh my god, what do I say?? This is absolutely wonderful! The story is so interesting and the way the world building is done, where usually the world ending would be a big and serious event where here, it's treated almost like it's in the background, from The Cleaner and the others (tho, due to different circumstances). Though the cleaning portion is a bit redundant Daniel and The Cleaner's interactions were more than enough for it~! I really like Daniel, especially on how he's quite kind, timid, and nice but also has his breaking point (though as of now it doesn't seem to be violent as he storms off before he says anything). But also seems to come back in order to make amends or to complete a task, his patience towards The Cleaner and also understanding is just... phenomenal and something The Cleaner desperately needs. Speaking of that, I love The Cleaner not only as how different he is towards other MCs but also because how his past affects him and he isn't just a "tragic MC with a tragic backstory", how he acknowledges his past doesn't excuse his actions.
I also like how Evie (The Cleaner's boss) seems very caring for him, almost like how Jess was through the snippets gained from the two, and how with her persuasion The Cleaner begins to grow closer with Daniel and their relationship blooming. I love seeing how their relationship bloomed from the awkwardness to something genuine, especially with how many troubles they faced at the beginning of the arrangement and how The Cleaner thinks about his emotions or attachment towards Daniel. I especially liked the part where he childishly tried to show off to Daniel how he "found" someone else, it was in character with how disconnected he was towards society/any normal thing you expect. Not only that, but the fact that these two characters can comfort one another despite their differences and how they bond together... It's just so nice to see, with Daniel's understanding and patience towards The Cleaner and him giving hope and comfort to Daniel's sickness.
Just-- Them!!!! Daniel giving The Cleaner a shoulder to lean on and that kiss on the cheek-- THAT WAS SUCH A VULNERABLE MOMENT I LOVE IT!!!