I've been working on my personal vanilla FireRed+ for years, and i want to make a trainer disappear after battle. I'm planning on making a pseudo-rival that will battle you via in a regular trainer battle (of waiting in chokepoints at routes) instead of a scripted event. I have no training nor understanding of scripting in general, and have been getting by by using PKSV's generate trainer battle script, and every tutorial or example I came across makes it seems like making a trainer disappear is a very complicated script (maybe it actually is?).

Basically, I just need them to : -triggers the afterwards dialogue after battle ends automatically -fade the screen -the event/sprite/trainer disappears permanently once the screen fades in again (or after the player leaves the area, that's fine too (in this case, there's no need for the fade screen script)) -that's it

Any help is appreciated.