Probably DMD (S1) or Man of the house, but I played japanese vn's before, but I wasn't the biggest fan of them. I didn't even know about these indy creator games before and a new world was opened for me
I would say give a flavour of what your game is going to be. If it slow-burner with story being the focus you have to nail the introduction of the characters and and intro to the plot. Whereas if your game is going focus on sex, portray how great how sex scenes are/ showcase how hot the ladies...