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1. The Bad Sister Club by Starry After Dark (SuperDuperStarry)

   Fandoms: Dangan Ronpa - All Media Types  

   • Mature
   • No Archive Warnings Apply
   • F/F, F/M, Multi, Other
   • Complete Work

   15 Mar 2026

   Tags

   • No Archive Warnings Apply
   • Shinguji Korekiyo/Amami Rantaro/Ikusaba Mukuro/Akamatsu Kaede
   • Amami Rantaro/Shinguji Korekiyo
   • Akamatsu Kaede/Shinguji Korekiyo
   • Shinguji Korekiyo/Ikusaba Mukuro
   • Akamatsu Kaede/Ikusaba Mukuro
   • Amami Rantaro/Ikusaba Mukuro
   • Akamatsu Kaede/Amami Rantaro
   • Shinguji Korekiyo
   • Amami Rantaro
   • Akamatsu Kaede
   • Ikusaba Mukuro
   • Sisters
   • Sister trauma
   • Lots of that
   • polycule
   • Polyamory
   • Hijinks & Shenanigans
   • Love at First Sight (sort of)
   • Group Therapy
   • Boba Tea
   • Tenderness
   • Banter
   • Developing Relationship
   • Post-Traumatic Stress Disorder - PTSD
   • Coping
   • Healing
   • Adulthood
   • Aged-Up Character(s)
   • everyone is 18+
   • Alternate Universe - Non-Despair (Dangan Ronpa)
   • They/Them Pronouns for Shinguji Korekiyo
   • Background Enoshima Junko
   • Background Shinguji Korekiyo's Sister
   • Background Amami Rantaro's Sisters
   • Background Akamatsu Kaede's Sister
   • Implied/Referenced Self-Harm
   • Past Abuse
   • Nicknames
   • Alternate Universe - No Ultimate Talents (Dangan Ronpa)
   • Alternate Universe - No Hope's Peak Academy (Dangan Ronpa)
   • Sporadic Updates
   • Characters Playing Mario Party
   • Slice of Life
   • Sexual Content
   • sometimes
   • more relevant tags in specific chapters
   • Teasing
   • all inconsistencies are my fault for writing this over the span of THREE YEARS MY GOSH

   Summary

   It starts as a joke for the group chat and quickly becomes something more. My cozy slice of life exploration between the sheer vibes that come up when you trap Korekiyo, Rantaro, Kaede & Mukuro in a room together. Very quickly devolves into polyamory. They are all adults doing their best with the chaotic lives ever, but they find each other at group therapy and they are working it out <3

   Language:

   English

   Words:

   93,701

   Chapters:

   27/27

   Comments:

   35

   Kudos:

   109

   Bookmarks:

   17

   Hits:

   3,153