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1. The Sun-Moon Cycle Happens in Every Universe, Don’t Mess it Up! by khris_the_batearedfox

   Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K.  

   • Not Rated
   • No Archive Warnings Apply
   • M/M
   • Work in Progress

   06 Apr 2026

   Tags

   • No Archive Warnings Apply
   • Kaidou Shun/Kuboyasu Aren
   • Kaidou Shun
   • Kuboyasu Aren
   • Saiki Kusuo
   • Nendou Riki
   • Kaidou Shun's Family
   • Aiura Mikoto
   • Toritsuka Reita
   • Alternate Universe - Fantasy
   • The Dark Reunion (Saiki Kusuo no Sai-nan)
   • The Dark Reunion is Real (Saiki Kusuo no Sai-nan)
   • Enemies to Lovers
   • Kind Of
   • Best Friends to Lovers
   • Feelings Realization
   • Awkward Romance
   • Awkward Flirting
   • Saiki Kusuo is So Done
   • someone help this boy
   • Minor Violence
   • They all need hugs

   Summary

   The Demon Killer had been tasked with stealing the Panalyze Stone months ago, but of course there just had to be so many hijinks in his mission.

   Now stuck in the same strange universe, The Jet Black Wings and The Demon Killer have to figure out a way to get back home without gauging out each others throats, and maybe sort out these weird feelings too. But hey, who are these people who look exactly like them!?

   Language:

   English

   Words:

   3,979

   Chapters:

   1/4

   Collections:

   1

   Comments:

   8

   Kudos:

   25

   Bookmarks:

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   Hits:

   139