My Unique Skill Makes Me OP even at Level 1, Vol. 5

Ryota is making full use of his newly acquired magic bullets and both his income and value is skyrocketing. That power caught some attention and Ryota receives a request to be the trump card for the new dungeon "Selenium" battle. There, he meets the imperfect beauty Celeste?! Can Ryota survive the ever-increasing quests with his unique skill?!