Hirunaka no Ryuusei Bangai-hen

This collection features additional stories and one-shots outside the main series. One follows the relationship between Mamura and Suzume. Another explores Sarumaru's thoughts after the main story's conclusion. A third story introduces Shishio meeting a neighbor six years later. A gender-swapped version of the main series is also included. Another story involves Chidori's preference for soy sauce ice cream from a specific shop, where she meets the shop's creator, who has changed significantly from her memories. A final story details events occurring six years after the main series ends.