From Twinbells Doujinshi:
A gorgeous doujinshi focused on Luc during various parts of his life and the way how his conversations with Leknaat and Tir changed his view on life. The main theme of the doujinshi is of Luc learning about a firefly's life and how it dies one week after it starts showering the world with its brightness, basically, its life. And later on, a grown up Luc (in Gensou Suikoden III) compares himself to a firefly as he realizes it is now his time to shine before he takes the True Runes with him to his death.