Those former companions abandon their retired life as famous heros (and their waifus) just for do evil things in other world, that's have free time and few libido
Ok at this point I couldn't finish the chapter, I'm out. This series just keeps getting worse and worse, also with all these powerful enemies from another world how come they didn't defeat the heroes while they were on the way to the demon king? Geh theres no forethought in any of this and that's why I'm out. Also I can't stand the stupid time jump with no context given to us on changes over that time.