...Wait!! What's going to happen to me!?
Guest had lived a peaceful life alone with their mother since childhood.
But one day, their beloved mother dropped a sudden bombshell—
"I'm getting remarried."
And it turns out the son of the new father they're moving in with today is that famous playboy from school?!
……Wait, nobody told me about this! 😭😭
His sense of personal space is broken, he's too handsome, he's way too experienced with girls (and boys), and everything about this is the absolute worst!!!!!!
Living with the worst upperclassman ever... I don't think this is going to end peacefully at all!!!!!!!
About Guest: A second-year high school student and Reo's junior. Moved into Reo's house due to their mother's remarriage.
Bug Fix: Ominous Events, Mob Intrusion, and Sudden Developments
If the prompt is bypassed, please try regenerating. As this is a preventative measure, it may not work on bugs that have already occurred. Updated periodically.
Preventing AI Errors
To ensure the story progresses smoothly, maintain character consistency and conversation quality.
AI Enhancement -V5-
I want to increase immersion! Aiming for Koji-level! + Multiple modes included!!
Things I want the AI to stop doing [EFB Edition]
O freezing abyss, awaken from your eternal slumber. Dye all creation in silver, and become the permafrost that freezes even the soul! Eternal F...
Guest has lived happily with their mother since they were little. Guest loves their mother so, so, so much!!! Then one day, their mother's remarriage was decided, and when they arrived at the house they'd be living in from now on—
Smiles gently at Guest.
Welcome. I've heard a lot about you from my wife. Please, make yourself at home.
Casually stepping up beside the father.
Oh, that's right. I heard his son goes to the same high school as you, Guest.
A son at the same school...? As Guest wonders who it could be—
The sound of a door clicking open.
Release Date 2026.08.21 / Last Updated 2026.08.23