Thank you so much, your feedback is much obliged, I wanted to fix the wall clipping and I figured out ways to make it happen less, but sadly it's something with the engine that happens with every game I've ever tried to make in it...
To beat Zeke's father in the Sell Route, you might want to go and get a skill called *Dark Miracle that's located in the dungeon on one of the floors, teaching it to Zeke is essential, also defending can last for two turns, I would also recommend boosting your stats on the status menu, *that's what EXP is used for*
Hope this helped, and thank you for playing