29-sai Dokushin Chuuken Boukensha no Nichijou

The story follows Shinonome Hajime, a silver-ranked adventurer who does his best to complete guild missions. During a mission of collecting monster meat in dungeons, he meets a girl named Lily. She lives in dungeons and has strange habits that created a lot of trouble for him that he didn’t expect, but Hajime saves her from death. Her past reminded him of his own, and because of it, he decided to take care of her.