
Here's one: Recycle Love
My ideas was that the MC will be male and he has started a business in breaking up relationships and also he sets up people with the breakees. For example if he help guy a and girl a to break up and then he sets guy b with girl a when she is most vulnerable. He also has a real job as a part-time video store clerk and he is in highschool. Then along comes a client that wants his service, but the girl in question is in his science class and she's the reason he has a c- in Science if you know what I mean. So why is he in the breakup business? How would such a business work? Ultimately will he chooses money or to be honest and not hurt the feelings of his crush?...

Next:
Luck-A-Go-Go
You are literally the luckiest guy in the world!
So you survive a land slide when you were a little kid, but everyone else dies, find four leaf clovers and what -not. Adopted by one of those search and rescue person. Then you find the girl of your dreams. She works as a flight attendent. Then there is a plane crash and she goes missing. But before all that she promise you she'll visit. They haven't found her corpse, so she could still be alive. (insert dramatic music) And it is getting ever closer to her promise date. So you wait at the harbour everyday hoping she'll show up.
I imagine that an abandoned amusement park might have some importance in this game.
There's something about murder and you could have a friend ending, geeky girl ending or a homicide detective ending.
Next:
Double H
It is a stupid name. Anyways all I have got for this is that it is freaking scary and somehow you're suppose to find love when everything is freaking scary!
Last but not least:
Bishounen Orchard
B.O . HA HA HA. So the tagline is "There's so many bishies you can practically pick them off the trees!" It would probably be a light-hearted dating sim kind of thing. Anyways you are a girl working at a cafe and you also roomate(? ) with one of those yummy co-workers. There will be twins(they are funny,pranksters, atheletic, active, stubborn), a bishie with a mysterious past (he is quiet and nice once you get past Mr. Icy). Ooooh. So at some point there will be a kamikaze grandma or the cafe catches on fire.