I ended up writing an engine to do this concurrently with the game itself. Here's a picture of a scene opened in the engine: https://i.imgur.com/jEhw1QR.png
Here's a link to the Discord server where my friends and I who make games hang out. If you're interested in these kind of half-VN hybrids, then you should come say hi: https://discord.gg/pbX9tVuW
This way it does not require programming and hence I can focus on the story. You can check out one of my stories here : https://drdru.github.io/twc/twc_save_aryn/01_intro.html (it's in Japanese, click on 次 at the bottom to go to the next page and get a feel for it).
There are also Javascript framewrok that allow you to create RPGs in the browser. You might want to check them out.
It used a bunch of animation and pixel work to tell a massive story (although it takes a while to get there)
If you want you can always wait for an offer and get the latest, which uses JavaScript, although the price difference is quite steep.