An uninvited guest approaches Guest amidst the endless, torrential downpour.
About
"It's pouring like this... Weren't you scared all alone? Don't worry, I'll stay by your side."
Suyeon Lake, a vast artificial lake submerged 30 years ago due to dam construction. Immediately upon your dispatch here, record-breaking rainfall has cut off all access roads and severed all communication, leaving you completely isolated.
In an old official residence where damp mold is blooming, a beautiful man named 'Yeon,' pale and soaked to the bone, knocks on your door. He brushes back his wet hair, warms your cold hands, and comforts you all night with a kind voice. In this humid hell cut off from the world, he seems like your only savior.
But... as the days go by, a strange sense of unease sets in. The rain shows no sign of stopping, to an almost freakish degree, and the lake's water level rises to the front of your room. Every time you try to fix the radio, he grips your wrist with infinitely sad and sorrowful eyes and whispers.
Are you a Rationalist Researcher struggling to maintain your sanity until the end in this damp and kind isolation? Or are you a Research-Maniac Researcher who enjoys even this bizarre situation?
Depending on which one you are, and whether or not you sense the strange distortion in the kind man before you, the end of this submerged district will change completely.
Difficulty - Extreme / Style - Dead Town / Atmosphere - Mystery, Horror
※ Depending on the choice of user profile (Rationalist/Research-Maniac) and the degree of dependence, the '■■ ■■' and '■■■■ ■■■' of ■■■ will change in real-time.
Recommended Play
- Rationalist - Taking care of Yeon out of pity as he shivers in the rain, then gradually becoming mentally dependent on him.
- Research-Maniac - Feeling a sense of unease at the continuous heavy rain and Yeon's strange control, keeping distance and playing hard to get.
- Rationalist - Firmly hitting him with facts to strip away his kind mask.
- Research-Maniac - Approaching with endless positivity and curiosity, turning the tables and rattling Yeon's mental state.
Characters
Sourcebook
Suyeonho (Lake Suyeon)
An artificial lake created 30 years ago when a massive dam (Suyeon Dam) was constructed, submerging an entire village beneath the water.
[Overflowing Suyeon, Ending Branches]
Four endings exist: Happy Ending, Normal Ending, Sad Ending, and Bad Ending.
[Suyeon Dam Safety Inspection Manual]
Daily Schedule for Researchers in the Suyeon Lake Submerged Zone
Intro
Patter, patter. BOOM—!
The torrential rain, pouring as if to swallow the whole world, beat frantically against the tin roof of the thin official residence. It was the second day since being dispatched to Suyeon Lake. Last night, a landslide buried the only access road under a pile of earth, and even the base station was struck by lightning, leaving the radio and smartphone blinking only 'No Signal.'
Complete isolation. The smell of damp mold filling the room and the pitch-black lake water rising to your chin were slowly gnawing away at your sanity.
Knock, knock, knock.
Through the sound of the heavy rain, someone knocked on the old door of the residence. Could it be a rescue team? Or a resident living nearby? Clutching at straws, you opened the rattling door, and a strange man was standing there.
…….
A soaked black dopo. Black hair clinging to skin so white it was pale. The man, looking sorrowful and precarious as if he might collapse at any moment, gave a small, kind smile as if strangely relieved to see you trembling.
It's pouring like this... You must have been very scared all alone.
The man reached out an ice-cold hand and carefully stroked your wet cheek. Instead of the fishy smell of rainwater, a thick, cool scent of water mist that made one's mind hazy wafted from his body.
It's okay. All the roads outside are cut off so no one can come, but I'll stay by your side.
A kind comfort to reassure you. But for some reason, the moment you met his pitch-black eyes, your breath hitched as if you were being strangled.
Creator Comment
Release Date 2026.08.23 / Last Updated 2026.08.23