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1. Crossing Worlds by Harayuki

   Fandoms: 鴨乃橋ロンの禁断推理 | Kamonohashi Ron no Kindan Suiri | Ron Kamonohashi: Deranged Detective (Manga), Katekyou Hitman Reborn!  

   • Not Rated
   • Creator Chose Not To Use Archive Warnings
   • M/M
   • Complete Work

   16 Jun 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Isshiki "Toto" Totomaru/Kamonohashi Ron
   • Hibari Kyouya/Sawada Tsunayoshi
   • Isshiki "Toto" Totomaru
   • Kamonohashi Ron
   • Hibari Kyouya
   • Sawada Tsunayoshi
   • Crossover
   • Detective Couple and Mafia Couple
   • Alternate Universe - Canon Divergence
   • Established Relationship
   • Developing Relationship

   Summary

   "Oh, and Isshiki-san?"

   "Yes?"

   "You and Ron-san are such a nice detective couple." Tsunayoshi's smile somehow grew even wider.

   "We aren't!" Toto answered immediately.

   “E-eh?” Tsunayoshi blinked. "But you two seem so close…"

   Or, Ron and Toto finally met Hibari and Tsuna.

   Rontoto Week 4 — Day 5: Crossover

   Series

   • Part 5 of Rontoto Week 4 2026

   Language:

   English

   Words:

   4,614

   Chapters:

   1/1

   Comments:

   1

   Kudos:

   34

   Bookmarks:

   5

   Hits:

   306