ORE TO KIMITACHI NO DUNGEON SENSOU

Description

In the year 2045, Earth was invaded by four different worlds.
To defend, it is necessary to conquer dungeons connected to each other world.
Each country selects an ``explorer'' who will be responsible for this, and Gunma, an ordinary man selected by Japan, is suddenly thrown into the forefront of the attack!
I was freaking out, and while I was activating my Listening and Enemy Search skills with excessively heavy equipment, I met the most beautiful girl in humanity!?
While being swayed by her too strong and crazy-minded girlfriend, he proceeds to conquer the dungeon with her unbelievable momentum...?
A never-before-explored dungeon fantasy that slowly knocks everything down!