Modern Ninjas, Being Versatile, Can Delve Deep Into Otherworldly Labyrinths Alone

The joy of wielding honed skills in an otherworldly labyrinth! The fulfillment of fighting on the edge of life and death! Gratitude! Ninja! This novel is composed of the following elements: • Strong ninja: 50% • Conquering otherworldly labyrinths: 25% • Events on the surface of the otherworld: 25% • Note: The protagonist of this work is a bit unstable, but it’s inevitable since he’s a ninja (there is some improvement from the middle). • Note: There is a lot of violence, in fact, the whole story is drenched in it. • Note: There are s*xual elements, but the characters are doing it on their own (uncontrollable). If you enjoy diving into labyrinth RPGs for leveling up and collecting item...