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1. Monster Under the Bed by Thwartalby (MongooseTrouble)

   Fandoms: モブサイコ100 | Mob Psycho 100  

   • Mature
   • No Archive Warnings Apply
   • M/M
   • Complete Work

   10 Feb 2026

   Tags

   • No Archive Warnings Apply
   • Reigen Arataka/Serizawa Katsuya
   • Reigen Arataka & Serizawa Katsuya
   • Serizawa Katsuya
   • Serizawa Katsuya’s Mother
   • Reigen Arataka
   • Reigen Arataka Has ADHD
   • Autistic Serizawa Katsuya
   • Anxious Serizawa Katsuya
   • Healthy Relationships
   • Coming Out
   • Good Person Reigen Arataka
   • Serizawa Katsuya is Trying His Best
   • Romantic Fluff
   • Mild Smut

   Summary

   It's Golden Week! The time when people travel to visit their families. Seasoning City is crawling with out-of-town tourists, and Reigen's clients are going crazy with their visiting parents upending their lives.
   Serizawa's mother is coming to visit for Golden Week, and she doesn't know Serizawa is gay, much less that he's dating his boss. This is her first visit since the Claw Terrorist event, so she's carrying a lot of guilt and anxiety around too.

   Whatever could go wrong?

   Series

   • Part 3 of A Natural Bond

   Language:

   English

   Words:

   14,762

   Chapters:

   4/4

   Comments:

   10

   Kudos:

   69

   Bookmarks:

   8

   Hits:

   568