Just like the rest of your commenters who decided to create an account for this site to voice out their experience about this game, I'll be jumping in the bandwagon as well. If it weren't really for Markiplier I wouldn't have discovered this game, I'm glad he decided to make a Let's Play out of this. It intrigued me enough to download it, I wanted to see the other endings for myself.
Now, I know—originally, I was expecting this game to encourage awareness about suicide, yes? And the practice of preventing it, or so I thought it was. Upon playing this, I noticed there's a hint of romance towards the player and the main character and like, the only way to prevent this guy from dying is to visit him at his place – I think I get the idea, you're going for something downright creepy, if not—to spook the player with your character's interaction by trapping the player to a place she's seeing for the first time? That level of uneasiness, I can see where this is going. (I've skimmed through your collection and you specialize in horror games, this definitely gives a player a scare.)
But for me, it was more thrilling than scary—again, I don't know what you're going for exactly with your characterization but I loved it. I love the fact the MC was eager and excited to meet his new companion, the danger in his voice, you know- the whole eerie energy coming out of it. You managed to hit that kind of strange, charismatic aura--- it's something that really captivates me, a female player. I think this game would be very popular to the female audience, yes – given that you stayed with making it clear the main character refers to the player as mademoiselle, kitten, darling – that pet name factor definitely plays a part in making the person playing the game blush, or like markiplier's reaction – creeped out. This is a good thing, you manage to really drive the audience with different reactions.
Can I just suggest something? Might you consider prologining this game? Although, that's not my best advice. This alone, the art style is amazing – I like how there's a manga-esque vibe to it, the screentone gives the character's arttexture! I love that, I love the animation, it's the perfect kind of jagged fluidity that unsettles the player. This is a good game, overall. Did you put some thought on the soundtrack? I love the songs you picked for this, absolutely stunning. Yeah, second thoughts: live this game be. It's perfect.
You're very mindful with choosing the accent. The MC is alluring, it draws me in. I like that but now, I really do hope for more of this. It's like – since the game is very short, it left me high and dry. Main reason why I am commenting is that, I fell in love with the main character, no shame in saying that? He charmed me, indeed. I absolutely adore the perfect blend of romance and danger he brings out. Interactive/otome games, don't have this kind of spice and thrill, this feels a lot like a romantic route with a horror factor. I hope (and advise) for you to come up with more games like these. It really throws the cliché simulations to the trash.
I think that if you continue making dark, romance-driven, horror interactive games, it would create history. I wish for this game to blow up. All the love and support to you!