Yes, there are fonts that are easy to read but not bland. What you want to look at is the "Paragraph" tag on Fontsquirrel. You can refine further with other tags. https://www.fontsquirrel.com/fonts/list/tag/paragraph
I cannot recommend you a font without knowing anything about your VN, though.
Basically, it's an action and fantasy story where you have to meet several girls, although you can choose between them. The whole story revolves around action and fantasy more than romance. I haven't decided yet if it will have any 18+ scenes since everything will be animated frame by frame. Think of it as playing an episode of an anime series.
Not to be mean, but you do realize how much work goes into animating even a 24 minute episode of a regular anime (which would be *extremely short* for VN standards)?
Besides, the idea of making me read extended narration while a video is playing will make it very difficult to take in either of those two things properly.
Your description still is far too generic to make any real recommendations. Are we talking Low Fantasy? High Fantasy? Steampunk? Science Fantasy? Dark Fantasy or light-hearted fantasy? Slapstick action, or grim and gritty action with lots of gore? All of these things will influence what is an appropriate font, along with the visual style of your game, which you have not yet defined.
For now, just use whatever royalty-free no-frills font you have on your computer and think about the font again when you have a clear picture. You now know where to find fonts and I am sure you will in time.
