Sure! Here's an example of a simplified JRPG turn-based game about angels at war with shadow angels, where the player controls an angel heroine and teams up with allies to defeat the shadow angels. Please note that this is a basic implementation and can be further expanded upon.
In this example, I've created a simple game structure within the HTML file. The game starts with an introduction screen where the player can click on the "Start Battle" button. Upon clicking, the startBattle() function is called, which currently checks if the player wins or loses and displays the corresponding victory or defeat screen.
To expand on this, you would need to implement the battle mechanics, enemy AI, character progression, and other JRPG elements. You may also incorporate pictograms or other visual assets to enhance the game's appearance.