Also known as 蛍火の杜へ, Into the Forest of Fireflies’ Light or The Light of a Firefly Forest.
This movie lasts for about 45 min. Its original run was on September 17, 2011.
Hotarubi no Mori e’s genres are drama, romance and supernatural. The movie is rated G, which is suitable for all ages.
Here is one of the Hotarubi no Mori e videos I found and like: