It should be the the beginning of volume 4. But reading from the start may be the best course of action.
Yep but some the after stories are about [crap drawing a blank on the characters name] but its the guy who everyone forgets about, the hero party member that fled for help and brought MC back the dungeon to save Hero party. Was funny to see Hajime's parents, his mom is a riot
Dude. The anime is a disgusting adaptation. Everything was cut leaving only the fanservice. Read everything from the start. It is waaaay better. You will enjoy it all. Definitely.
anime was a rushed BADLY cgied fuckup that doenst do it or any isekai series justice wish they would stop fucking them over by giving isekais to shit companies that kill the animation and story.
I honestly prefer the after stories main is like 160chapters after is now longer and much more enjoyable.