Im pretty sure I found the sauce!

• SauceNao SourceURL:https://danbooru.donmai.us/post/show/4176774
• Source:COMIC Anthurium 2020-09 [Digital]
• DanbooruId:4176774
• Similarity:96.85

Found On Trace.Moe with a similarity of 0.8: - Title English:Is the Order a Rabbit? BLOOM

• Title Romaji:Gochuumon wa Usagi desu ka? BLOOM
• Title Native:Is the Order a Rabbit? BLOOM
• anilist Id:104198