Moto Sekai Ichi'i no Sub-chara Ikusei Nikki - Chapter 67: What have I gotten into?

Luo Zheng is at the bottom of the Luo Clan hierarchy, despite his family being the founders of a power refining technique that could instantly defeat any opponent.

WARNING!-DARK ROMANCE-A shifter will only have mate from their kind, but what happens if you are the last creature of your kind?Lycan.He is the last of his kind and is the most terrifying type of shifter. But, as scary as he was, he was alone.However, in order to survive, you don’t have to be the strongest, just deadliest.***He looked at her like he had never seen anyone before. The sight of her calmed the rush in his ears, the beat of his heart and finally he was able to focus again…“She is no longer your responsibility. She is mine to deal with now,” the lycan said.

This is a story of a little man who walks forward silently, in awe, and strives to chase his dream.

- Description from novelbuddy

One-eyed Wolf Lecan is a skilled adventurer who has conquered many dungeons all over the world. He had been going solo for a long time, but in the last three years, he’s had a partner. That partner jumps into the black hole together with Lecan, and both go their separate ways as they fall into another world. Dungeons and magical beasts also exist in that world. After learning the native language, Lecan goes on a journey. Meeting a good teacher, Lecan studies medicine making and magic under that teacher, and begins his dungeon explorations for real.