Bittersweet Fools is a visual novel eroge developed by Minori. It was ported to the Dreamcast and PlayStation 2 with H-content removed as part of the Simple series line of "ren'ai adventure" games. It is vol.1 on the Dreamcast and vol.9 on the PS2.
The anime opening of the game was directed by Makoto Shinkai. The game takes place in Florence, Italy. The character design is by Yu Aida, whose Gunslinger Girl series also takes place in Italy.