VNs that warn when an H-scene is about to happen?

[redalchemy]

I'm trying to find some VNs that I can safely play at work or in public. I've been reading Tsukihime on the online site for it and I love the option to warn me when an H-scene is about to happen. Are there any other games like this or maybe where the H-scenes are separated into a menu or something instead of the main game. I heard Chrono Clock was like that so I'm about to start it. I'm open to suggestions tho! I prefer gay stuff but I'm open to everything. Thanks!