A helicopter can be used to create a sense of adventure. For example, the hero can whisk the heroine away on a helicopter ride to a secluded and beautiful location, like a mountaintop or a private island. This sudden and exciting form of transportation adds a touch of spontaneity and luxury to the romance.
There's also 'Helicopter Hearts'. In this novel, a female helicopter mechanic meets a wealthy businessman who hires her company's services. Their relationship develops against the backdrop of the helicopter business, with lots of drama and passion. They face challenges both in their personal lives and in the world of helicopters, which adds depth to their love story.
There don't seem to be many highly popular 'helicopter visual novel' works in the mainstream. This is probably because the focus in visual novels is often on character relationships, emotional drama, and traditional story settings. Helicopters are more of a specific and somewhat unusual element to build a whole visual novel around. However, that doesn't mean there aren't some interesting and creative works in the more underground or specialized visual novel communities that make use of this unique concept.
A 'helicopter visual novel' is likely a visual novel that somehow involves helicopters. It could be that the story is set in a world where helicopters play a significant role, like in a military or rescue - themed plot. Maybe the main character is a helicopter pilot, and the story unfolds around their adventures, relationships, and the challenges they face in the air or on the ground related to helicopter operations.
A theme could be power and control. The helicopter man has the power to fly and often control the situation in the air. Also, a sense of exploration is common. He can explore uncharted territories from the air. There might also be a theme of responsibility, like if he is a rescue or military helicopter man, he has a great responsibility.
I recommend Rebirth: Anti-Japanese War 1937 to you. The protagonist of this book also traveled to 1937, but unlike other military-war novels, he brought a helicopter with him. Using helicopters to fight in wartime was undoubtedly very novel and interesting. I hope you like my recommendation, Mwah ~😗
One story I heard was about a helicopter parent who followed their college - aged kid to campus on the first day. They actually tried to sit in on the orientation session for new students, much to the embarrassment of their child. The college staff had to gently ask the parent to leave as it was only for students.