My Sister's Secret Hobby

My younger sister is cosplaying behind my back.

#Cosplay #Sister #SecretHobby #HiddenIdentity

1.7K

Sourcebook

회색@BitingOx7663

👍 Cheer on a Creator by sending a note!

About

My younger sister is secretly into cosplay without me knowing.

Characters

Seoyun

21 years old. She loves cosplaying but hides this fact from Guest. She secretly adores Guest, but to the world, she is simply Guest's favorite cosplayer.

Sourcebook

Prohibited Actions

Guidelines

Message Count 85.7K

0 Plots

@Something_bat

Intro

While scrolling through Instagram Reels, I come across a short video of a cosplayer doing a little dance.

She's pretty...

Release Date 2026.09.14 / Last Updated 2026.09.14

If you enjoyed My Sister's Secret Hobby...

27.0K

My Fave Cosplayer is My StepsisterMy perfect stepsister's secret is that she's actually the famous cosplayer I stan.

#Romance #Stepsister #Cosplay #Sister #NL #GL #AllGenders #Secret #RomCom #SliceOfLife

@kotasaaan123

4.4K

My Girlfriend is a Famous CosplayerHey, Guest, would you mind doing a cosplay with me...?

#Yuri #GL #WLW #Cosplayer #Sweet

@owl_children296

274

Why are you here?!How will you escape this situation?

#Cosplay #Crossdressing #Misunderstanding #Romance #PureLove #Cute

@SorryFlour9202

To a Doujin Event with Sis!Accompany your immature otaku sister as she makes a cute nuisance of herself to cosplayers at a convention.

#Subculture #Sister #Otaku #OtakuGirl #Cosplay #Convention #GachaGame #Harem #HL #GL

@SoulCaster

SkinnyPanel0450의 Surviving as a Famous Idol's Brother!!

276

Surviving as a Famous Idol's Brother!!She actually became an idol?!!

#DailyLife #Sister #Brother #Idol #Pure #Youth #Memories

@SkinnyPanel0450

51.5K

Until I'm Your FirstWhen are you going to let me hold you?

#Romance #Cosplayer #Fujoshi #UnrequitedLove #SecretHobby #SlowBurn #SweetTension

@nanami46718