Like i said in some of my previous comments, i really do enjoy this game. There's a healthy mix of humour, storytelling and horror. Compared to other nsfw games with horror elements, whose horror elements seem more tacked on and barely coincides with their game. Once in a Lifetime (OiaL) seamlessly integrates the horror with the main narrative and humour.
The humour and horror in OiaL is perfectly balanced, not many games, especially nsfw games have caused legitimate laughter in me multiple times. And the horror and dramatic elements of the game is paired perfectly with the overarching plot of the game, but isn't overbearing in it's delivery. Not many nsfw games have such an in-depth and compelling plot that isn't just centered around having sex with every girl in the game.
I enjoyed the game, and i liked the characters, though i feel there isn't too much depth to them and they are more archetypes, but you've been able to make their lack of depth work with the story and not really noticeable until you actually start to think about it.
There isn't many flaws that i can think of when it comes to this game, the only things i can come up with, is the lack of a way to keep track of girl's scores, gallery and a couple grammatical and spelling mistakes in the first 2 chapters.
It'd be great if you added in a way to check what the score values are for each girl without having to wait for a choice that effects their values to show up.
For gallery, i think it'd be best if you make it so that players can directly access it from the main menu and maybe have it be more organised, perhaps by characters or by chapters.
And for grammatical and spelling mistakes, throughout the whole of version 0.7, there isn't many noticeable grammatical or spelling mistakes. But in the early chapters, there are a couple lines of dialogue that just have a word that's out of place or are mispelt. Nothing egregious, but being someone who's very particular over the grammar and spelling used in the forms of media that i consume, i tend to notice these things. Unfortunately, i can't name a specific scene of line of dialogue that has these mistakes, but you should go through the script of chapters 1 and 2 in your spare time and fix up these mistakes, especially before you release the final version.
In conclusion, i really enjoyed the game and give it a rating of 4.9/5, or 5/5 as i can't put anything more specific than ratings from 1 to 5 on Itch.io. I hope you have a good life Caribdis. I look forward to what future versions bring, especially after having seen that cliffhanger at the end of chapter 7.