Rather than seeking henti, you should explore proper manga or anime that have engaging stories. For example, 'Fullmetal Alchemist' has a deep and complex story about two brothers' journey to regain their bodies. It offers a great blend of action, emotion, and moral lessons.
First, focus on character development. Just like in any good story, create complex and relatable characters. For example, give them interesting backstories and motives.
I'm not entirely sure as I haven't played it in detail. But generally, visual novels often involve a story with characters, plot development, and usually some form of interaction or decision - making. It might be about angels in some way, perhaps their battles or their relationships in a fictional world.
Henti content, including henti sister visual novels, is generally not legal in many countries as it involves pornographic and often unethical themes. It violates laws regarding obscenity and moral standards.
Well, often the main character who wields the angel blade is quite popular. They are usually portrayed as brave and having a strong sense of justice. Also, any characters that have a mysterious connection to the origin of the angel blade tend to be popular, like an old sage who knows the secrets of its creation.