The supporting character's harem is very normal - Chapter 430 Let me go!

Ukei Kaito fought a desperate struggle in order to fulfill his role as a summoned hero. He defeated the Demon Lord and saved the very world, only to meet an end filled but with betrayal. The companions that he’d trusted throughout his journey betrayed him and killed him by sticking a blade through his chest.

I just shut the door, why should I kill the devil.

No, I need a demon hunter, Dante, it’s up to you.

Cultists, demons, traitors, and even fanatics, it seems that there are too many things to cut. This world needs justice, and now justice is angry.

(Mainly the PF system, and then the Pathfinder Wrath of Righteous mod. Note that mods are not games.)

(In the end, all the dice in this novel use real dice, not dice girls, nor set by myself.)

- Description from novelbuddy

July, 1946. The existence of an alternate world was confirmed.

It was supposed to be a new world for mankind.

However, the enormous cost, the annihilation of the advance troops, and fierce public opposition led to the signing of a non-aggression treaty.

Mankind turned their eyes towards space.

Half a century later.

A certain company formed a team in order to explore the alternate world’s dungeon.

Five professionals and three artificial intelligences. And one reserve member.

With modern weapons and technology, the adventure was expected to be easy.

However, the ones who had arrived in the alternate world were a defective artificial intelligence and a non-professional.

Through trial and error, they lived, ate, and fought. And, they explored the dungeon.