Version 0.4 is often a "tipping point" in the development cycle of visual novels. Versions 0.1 through 0.3 usually establish the setting, the main love interests, and the inciting incident. By v0.4, developers often introduce:
A blog post for the update of Unholy Angel: Wedding Adventures Unholy Angel- Wedding Adventures -v0.4 Alpha- B...
According to the developer’s latest post: Version 0