Mutsuki Shindo
Mizuiro (2001) is a dating simulation made by NekoNeko Soft. It gets compared to the best dating sims and naki games, like the classics AIR and Kanon, both for its moving storyline and for the way that, although it is an H game, there are minimal ecchi scenes in the story: one for each character in the story and one for each character in the after story. It has four versions: PC CD (3 Disc), Dreamcast, PlayStation 2, and PC DVD-Rom.
There were two anime OVA adaptations of the game: a two-episode H OVA in 2002 and a two-episode non-H OVA in 2003. They both have same characters, yet some what different storyline.