The suffix indicates two things about the digital history of this file:
Natsumi gained popularity for her girl-next-door aesthetic and appeared in numerous titles ranging from "GOD-001" to later entries in the series. Noeru Natsumi God 031 .avi.006
Audio Video Interleave (AVI) was a standard multimedia container format introduced by Microsoft. While less common today than MP4, it was the dominant format for high-quality video rips for many years. The suffix indicates two things about the digital