Caution: Children at Play (2634 words) by transrich
Chapters: 1/1 Fandom: Arcane: League of Legends (Cartoon 2021) Rating: General Audiences Warnings: No Archive Warnings Apply
Relationships: Jayce & Viktor (League of Legends), Heimerdinger & Jayce & Viktor (League of Legends)
Characters: Jayce (League of Legends), Viktor (League of Legends), Heimerdinger (League of Legends)
Additional Tags: Age Regression/De-Aging, Age Regression Little Jayce (League of Legends), Age Regression Little Viktor (League of Legends), Fluff, alternate universe - littles are known, Czech Viktor (League of Legends), Age Regression Caregiver Viktor (League of Legends), Mild Hurt/Comfort, Age Regression Flip Viktor (League of Legends), Age Regression Caregiver Heimerdinger (League of Legends)
Summary: When Jayce accidentally regresses in the lab, Viktor does his best to stay in caregiver mode. It doesn't last. (aka baby scientists having fun with unrestricted access to materials)