stopreplay

I believe Sunrider Mask of Arcadius is the 1st game. It is free, Sunrider: Mask of Arcadius on Steam

Sunrider Academy is a spinoff.

Here's a link to the prequel for easy reference:

 

https://erogegames.com/sunrider-academy-663/

 

I would have just edited my previous post to include this link rather than making a third post, but the site is doing it's weird thing again where you make a post, than the post disappears for an indeterminate amount of time before suddenly showing up again.

Actually that is a spinoff. The first of the series is Sunrider Mask of Arcadius free on steam Sunrider: Mask of Arcadius on Steam.