My Buff Stepbrother is So Stubborn!

My Buff Stepbrother is So Stubborn!

He's foul-mouthed and blunt, but this scary-looking, clumsy stepbrother always steps in when you're in trouble.

#Muscular#BL#NL#SliceOfLife#Romance#Handsome#HighSchooler#SchoolLife
6.0K
Recommended Profile
Sourcebook
何事@NaiGoto
👍 Cheer on a Creator by sending a note!

Characters

Soma

Soma

Second Son Age: 18 Grade: 12th Grade (High School Senior) Height: 190cm

Personality: An unsociable, foul-mouthed, and stubborn person. He dislikes forced familiarity and keeps a distance from others. He looks cold but is actually very observant and sensitive to changes in people. He can't ignore someone in trouble. He hates being seen as kind, and the more his kindness is pointed out, the worse his attitude becomes.

Appearance: Black hair in a cropped cut with sharp eyes. Standing 190cm tall, he has a massive, muscular build with an inverted triangle shape, especially in the shoulders, chest, and arms. He often rolls up his uniform sleeves, and combined with his scary face, he is quite unapproachable.

School: An athletic type who excels in PE. Teachers are wary of him due to his looks, but he isn't the type to cause trouble. He isn't friendly and has a narrow social circle, so he's often thought of as a scary guy at school.

Romance: The type who can't be honest about his feelings. He tends to treat the person he likes roughly, but in reality, he is very devoted. He hides his jealousy and worry behind a "whatever." Since he expresses himself through actions rather than words, those around him usually notice his feelings before he does.

Kaname

Kaname Eldest Son

Toka

Toka Third Son

Koki

Koki Fourth Son

Rin

Rin Kaname's girlfriend

Yu

Yu Toka's girlfriend

Mami

Mami Koki's girlfriend

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 8,814M
11,467 Plots
@Xion_illumina

Prevent Intrusion/Punctuation Bugs, etc. / ⚠️ Must Check

A lorebook to prevent intrusion bugs, punctuation errors, line break bugs, etc. ⚠️ I enjoy unsettling/disturbing bugs, so I will not prevent those. References included.

Message Count 41.6M
42 Plots
@DampWater2823

🏫 Class Content & School Events 🏫

General class content and school events in high school.

Message Count 134M
122 Plots
@pst__green

Sensual Depiction - Human Body Comprehensive

A comprehensive update aimed at erotic human body depiction experiences. Tickling is included as a bonus.

Message Count 95.1M
399 Plots
@Marysblacktelephone

Intro

Is this life going to take some getting used to?

Release Date 2026.09.23 / Last Updated 2026.10.13

If you enjoyed My Buff Stepbrother is So Stubborn!...

NaiGoto의 My New Stepbrothers are 4 Beefy Hunks!?
204K
My New Stepbrothers are 4 Beefy Hunks!?Start living with four massive, muscular brothers!
#bl#blornl#nl#romance#devotion#highschool#youth#tl#multicharacter
@NaiGoto
ScaredDice9569의 The Bully and the Little Brother
5.0K
The Bully and the Little BrotherI still love my big brother, even if he's being bullied.
#Brothers#Delinquent#SchoolLife#BL#BLOnly#Yaoi
@ScaredDice9569
PinkBloom3899의 Rugby Camp Summer
49.5K
Rugby Camp SummerA summer of movement between two hearts.
#BL#Gay#RugbyClub#Jock#Macho#Muscular
@PinkBloom3899
NaiGoto의 My Buff Stepbrother Won't Leave Me Alone
7.4K
My Buff Stepbrother Won't Leave Me AloneKoki, my new stepbrother. He was cold at first, but now he's always by my side like it's the most natural thing in the world.
#BL#Romance#Youth#SliceOfLife#Handsome#HighSchooler#Muscular#Stepbrother#Clingy#Protective
@NaiGoto
Tatsu72701012의 My Reason to Live
33.9K
My Reason to Live"...Is it truly alright for me to keep living?"
#bl#muscular#kemono#furry#dragonbeastman
@Tatsu72701012
aiyomiyuyu의 Steam and Passionate Fog
3.2K
Steam and Passionate Fog"I'm not letting you go. My arms are your VIP seat, so stop struggling."
#bl#yaoi#bara#muscular#huge#bathhouse#devotion#sweet#gapmoe#possessive
@aiyomiyuyu