This game won't last you long, but considering the price you'll get at least a few hours playtime. (wolfsgamingblog.com)
The progress that players will make in the demo will not be carried over to the final game, and the players will get about one and half hour playtime out of it. (segmentnext.com)
Ultimately, though, these are both great visual novels in their own right, and highly deserving of their combined 50 - odd hour playtime. (pcgamer.com)