What is firefly marriage manga?

Firefly Marriage (Hotarubi no Tomoru Koro ni) is a romance manga written and illustrated by Hiro Fujiwara. The story revolves around a young girl named Hotaru, who moves to a countryside town and befriends a young boy named Gin, who is a spirit that only appears during summer nights. As they start to spend time together every summer, they fall in love but are unable to touch, as Gin will disappear forever if he is touched by a human.

The manga was serialized in LaLa DX magazine from September 2019 to August 2020 and it was collected into a single tankobon volume. The manga is a stand-alone story and has not been adapted into any anime series or films yet.

Firefly Marriage has received positive feedback from readers and critics for its unique premise and beautiful artwork. The manga is recommended for fans of romance and supernatural genres.