Im pretty sure I found the sauce!

• SauceNao SourceURL:https://www.furaffinity.net/view/29819696
• Title:Tiki and Lucina
• AuthorName:Ondine
• AuthorUrl:https://www.furaffinity.net/user/ondine
• Similarity:97.36

Found On Trace.Moe with a similarity of 0.86: - Title English:KINMOZA!

• Title Romaji:Kiniro Mosaic
• Title Native:KINMOZA!
• anilist Id:16732

Adorable!