I was wondering if this plugin is able to do such battle system? Similar to Ragnarok Online where user can click on enemies to target them and when clicking the enemy again, an auto battle between player and enemy is initiated with both using basic attacks. Now if the user click on enemies and use skill, then the skill's target will automatically be the clicked enemies.

Asking before buying this because I'm so close to purchasing this but still can't decide on which battle system my game's going to be like hahaha!

Possible but will require from you some skill, especially when the demo is built based on traditional top down using keyboard and mouse combined (like Zelda or Elden Ring). You'll need to build that system by yourself using the plugin. Do give me a message via Discord if you have questions!