God of the Sun

This traces Sirius back to where he started, before Stray Incubus, when he was just becoming whatever he's going to become. It stands on its own; you don't need the other game to follow what's happening here.

The setup is a superpowered figure tangled up with religion and violence, the kind of story that treats its protagonist's rise as something worth watching unfold rather than skipping to the end of. Expect fantasy trappings and a plot that takes its time getting him from nobody to something with a title like "god" attached to it.

As a visual novel, the player mostly reads and chooses through Sirius's early path, with combat and power on display through rendered scenes and animated moments rather than any real mechanical layer underneath. It's a story delivered, not a system played.