Sex & Dungeon!!: Wagaya no Chika ni, H Kaisuu = Level no Dungeon ga Shutsugen shita?!

When a colossal labyrinth suddenly materializes beneath his family home, an ordinary young man named Souhei finds himself thrust into an extraordinary adventure. Driven by curiosity and the thrill of discovery, he steps into the sprawling depths of this massive underground dungeon, unaware that its mechanics defy every conventional rule of exploration. This is no ordinary subterranean maze; it operates on a highly unique system where traditional combat and training are entirely useless for progression. In this bizarre realm, the sole method for gaining strength and advancing deeper is through intimate encounters with women. Souhei quickly learns that his power level is directly tied to his "Lv," which stands not for standard experience, but for Love. Every passionate interaction within the dungeon's walls translates directly into increased capabilities, fundamentally altering how he must approach his journey. What follows is the tale of a young explorer navigating both the treacherous architecture of the labyrinth and the alluring challenges it presents. As Souhei delves further into the unknown, he must embrace the dungeon's unconventional requirements, forging intimate bonds with the women he meets along the way. His quest to conquer the depths becomes an unforgettable journey of exploration, desire, and empowerment unlike any other.