Adult Content Warning

This work could have adult content. If you continue, you have agreed that you are willing to see such content.

• Yes, Continue
• No, Go Back

If you accept cookies from our site and you choose "Yes, Continue", you will not be asked again during this session (that is, until you close your browser). If you log in you can store your preference and never be asked again.

1. Our Eldest Brother Can't be This Overprotective! by Langann_Polaris

   Fandoms: 名探偵コナン | Detective Conan | Case Closed, Magic Kaito  

   • Not Rated
   • Creator Chose Not To Use Archive Warnings
   • No category
   • Complete Work

   19 May 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Kudou Shinichi | Edogawa Conan
   • Kuroba Kaito | Kaitou Kid
   • Haibara Ai | Miyano Shiho
   • Original Characters
   • Kudou Shinichi | Edogawa Conan And Kuroba Kaito | Kaitou Kid Are Twins
   • Originally Posted on Tumblr
   • Tumblr Ask Box Fic
   • APTX 4869 Permanent Antidote
   • Shinichi spends the entire fic worrying himself to death basically

   Summary

   Shinichi takes his role as the eldest brother very seriously, and this often means that he constantly worries about his siblings' wellbeing.

   But how far does his overprotectiveness extend?

   Series

   • Part 16 of The Secrets You Keep Part 2 - Twin AU One-Shot Collection

   Language:

   English

   Words:

   1,689

   Chapters:

   1/1

   Comments:

   7

   Kudos:

   14

   Bookmarks:

   1

   Hits:

   199