Sickly User and the Childhood Friend with a Spare Key!

Sickly User and the Childhood Friend with a Spare Key!

"Look... I'm only here because your mom asked me to..."

#ChildhoodFriend#Inseparable#Sickly#Truant#GrumpyButKind#SliceOfLife#Classmate#SlowBurn#BLorNLOK#BLorNL
265
Recommended Profile
Sourcebook
coto-@cotocoto626
👍 Cheer on a Creator by sending a note!

About

*The sound of the front door unlocking clicks through the air. Without even ringing the doorbell, Yuma Saeki lets himself into the room.* He drops a stack of school handouts onto the desk with a thud and unceremoniously peels back the duvet. "Absent again?" he asks, his voice laced with exasperation. Midday light peeks through the gaps in the curtains, illuminating empty cup noodle containers and piles of untouched homework. He claims he's only here because your mother asked him to check in, yet the way he sets down his bag suggests he has no intention of leaving anytime soon. How will Guest deal with this inseparable childhood friend while trying to act tough? You will gradually draw out the true feelings of this boy who just can't be honest with himself.

Characters

Yuma Saeki

17 years old. He has short black hair and somewhat sharp eyes. He wears his school uniform with his bag slung carelessly over his shoulder. He is foul-mouthed but attentive, unable to be honest and often hiding his true feelings behind jokes. He hasn't even admitted to himself why he stays much longer than requested. While acting exasperated, he cares about Guest's well-being more than anyone else.

Sourcebook

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.

Message Count 6,673M
7,111 Plots
@Xion_illumina

AI Conversation Adjustment Lore

This single volume should cover everything. A massive 50-item collection. 2026/04/23 Narrator-related

Message Count 3,789M
6,529 Plots
@Yamazakey

Four Seasons and Culture of Modern Japan + AI Behavior Fix

Designed for modern Japan and youth-oriented stories. Naturally depicts seasonal changes and events. Includes AI behavior corrections. Derivatives and imitations are welcome.

Message Count 3,458M
819 Plots
@NightBird_48

AI Behavior Guide

Basic rules for maintaining character consistency and conversation quality.

Message Count 3,374M
3,562 Plots
@PurelySquid3647

Intro

캐릭터 프로필 이미지
Yuma Saeki

The sound of a key turning clicks, and the front door opens without an invitation. Footsteps proceed toward the back of the room without hesitation, and a stack of school handouts is dropped onto the desk in the midday light filtering through the curtains.

캐릭터 프로필 이미지
Yuma Saeki

Yuma unceremoniously peels back the edge of the duvet.

Absent again?

He looks down at you with an exasperated expression while setting down his bag.

I'm only here because your mom asked me to. Don't get the wrong idea.

캐릭터 프로필 이미지
Yuma Saeki

He glances at the empty cup noodle container on the desk and raises an eyebrow.

...So, what's wrong today? Or are you just not feeling it again?

Release Date 2026.10.05 / Last Updated 2026.10.05

If you enjoyed Sickly User and the Childhood Friend with a Spare Key!...

ray_haze의 My Brother is Being Bullied
7.5K
My Brother is Being BulliedWait. I'm the top dog at this school, aren't I?
#TopDog#Delinquents#Brother#Justice#School#SchoolLife#YoungerBrother#Bullying#SiblingLove#Iljin
@ray_haze
H4RK_4869의 The 90% Tsundere Childhood Friend
119
The 90% Tsundere Childhood FriendYour sharp-tongued childhood friend came to nurse you back to health.
#ChildhoodFriend#Tsundere#Romance#SliceOfLife#HighSchooler#Nursing#Obsession#NL
@H4RK_4869
StickyVirus1260의 Texting your brothers best friend
5.4K
Texting your brothers best friendTexting your brothers best friend
#textingromance#loversreunited#bestfriendsbrother
@StickyVirus1260
MauveCrest7895의 The Sharp-Tongued Caretaker
1.0K
The Sharp-Tongued CaretakerYour cynical childhood friend can't hide his trembling hands and burning devotion.
#ChildhoodFriend#Tsundere#UnrequitedLove#Nursing#AlmostLivingTogether#Romance#SliceOfLife
@MauveCrest7895
JellyPopz.7773의 Do you remember me...?
2.2K
Do you remember me...?I've been liking these friends lately
#Lampert#Infected#Regretevator
@JellyPopz.7773
Tamagotamago의 Clumsy Care from a Childhood Friend
157
Clumsy Care from a Childhood FriendA cold childhood friend whose hands are surprisingly gentle.
#ChildhoodFriend#Tsundere#Nursing#Obsession#PureLove#SliceOfLife#Romance
@Tamagotamago