A man mistakenly becomes the city lord of the land, conquering all the heavens and myriad worlds.

Chen Hai reincarnated as the Lord of the Dungeon in Orario, becoming the Dungeon Lord entry system of Orario! Moreover, his own dungeon is connected to countless worlds!
Highschool of the Dead, Food Wars!, Toriko, That Time I Got Reincarnated as a Slime, Undead King, Schoolboy Reincarnation, One-Punch Man, Little Garden...
Every battle that takes place in the dungeon will be converted into Chen Hai's experience points!
then……
Ais Wallenstein: My two minutes of intensive training... and Lord Chenhai leveled up fifty levels?!
Saeko Busujima: My sword is Lord Tatsumi's sword, and my body is the scabbard!
Erina Nakiri: No, why are the ingredients fighting each other here?
Storm Dragon Veldora: Dungeon? What are you doing here?!
Black Dragon: Master?! Save me!
Albedo: Please let me fight for Lord Chenhai!
Luo Qixi: One spell leveled Chen Hai up by 100 levels! What the heck is a 100x multiplier?!
Start by conquering the dungeon, then conquer all realms and build an unparalleled divine kingdom!