As rilwal said, you can use Textractor together with Nazeka on firefox to look things up way more smoothly.
Textractor basically extracts the text from the VN and puts it in your clipboard so you can paste it anywhere. Nazeka automatically pastes everything in a separate window and also shows readings and meanings for any japanese that you hover over.
It’s very easy to set up; all you have to do is install Textractor, then open it and attatch it to the game (1). Then you click on the drop down (2) and select the right output channel. Just scroll through until you find the one with japanese from your game.
After that, right click the Nazeka addon in Firefox and select Open Reader. Now, every time you advance the dialogue in the game, it’s going to show up in the reader, and you can hover it for definitions.
Just make sure that Nazeka is enabled by clicking it first, otherwise it won’t show the definitions when you hover.
