Mob kara Hajimaru Tansaku Eiyuutan

Both shows are set in the real world where adventurers can go into a dungeon in another world to fight monsters and earn money and status. The MC in both shows start out on the bottom. 

Yes, ladies and gentlemen, two anime about characters living in a world with real-life RPG features and monsters. While the two universes are rather different in setting (one's the real world, the other a VR game), most stuff ends up being rather similar: the enemies, the dynamics between characters, the unnecessary melodrama, the cringe shounen trope of characters yelling the name of the movement they're using during a battle... Ah, yes, the sweet smell of generic anime in the 21st century. 

Takagi and Bell are very similar as they are both dungeon explorers barely getting by struck to the first floor of the labyrinth both start to get stronger with Takagi killing a slime that dropped a servant card for a loli Valkyrie to fight by his side while Bell meets Ais Wallenstein the sword princess causing him to gain a skill just to catch up to the legendary explorer Danmachi set in fantasy world were the gods of most religions have come to down tot he moral world where A Nobody's way to an exploration hero is set in a modern world wher fantasy dungeon opened up and became part of the economy  read more 

both are modern world where fantasy dungeon opened and became part of daily life both have similar art style one a nobody's way to a exploration hero focuses on the mc trying to become strong white shachibato follow a young president of a guild tasked with harvesting material from dungeons