Abel issued a notice yesterday announcing that CEO and founder Hiroyuki Kanno passed away on December 19th following a stroke.
Kanno is widely known in the adventure/visual novel genre for such titles as Desire, EVE burst error and Yu-no. After serving as CEO of Elf, he formed Abel in December 1997.
The notice of Kanno's death was posted to Abel's official blog. The company has not said who will fill Kanno's role as CEO.