Returning to the Tamamushi Shrine: It is a zushi (miniature temple) meant to house a small Buddha statue. Inside the darkness of the shrine, the beetle wings would glitter by candlelight, representing the hidden Buddha nature within all beings.
The series is a non-canon derivative work created by an artist using the pseudonym Kin No Tamamushi Kin No Tamamushi Giyuu Insects
And somewhere in the reborn woods, a single Kin No Tamamushi Giyuu insect—the last one still faintly glowing—whispered to no one: Returning to the Tamamushi Shrine: It is a