The 4-panel manga of Haiyore! Nyaruko-san.

Jin is an adventurer so overwhelmingly strong that he can cut down a three-headed dragon with a single slash! Though he craves more power, he fears that becoming any stronger would turn him into a monster... so he retires from adventuring and returns to his hometown café, in Dagar! However, in the mountains behind his family home lies a dungeon said to grant one’s deepest desires...?! Together with Shuna, a runaway saint who suddenly barges into his life, the power-hungry former adventurer sets out to conquer the dangerous, monster-filled dungeon! And after the battles, they savor exquisite dungeon cuisine made from the monsters they defeat—?!

Invincible and undefeated in exterminating monsters! Mess selection is a losing streak! The female knight will fail again today!? A tunnel connecting the other world and the earth has appeared, and many monsters have flown in...! It causes confusion... Then Serena Lightwood (23 years old), a female knight who boasts an undefeated ability to exterminate monsters, appears. She is invincible against monsters, but she has a secret! Whenever she goes out to eat, she always fails... A female knight from another world challenges Japanese food!!