(Blue Love of Life and Death + Miss Mermaid) I Am a Hero

I am a hero, Choi Ying Ying. Familiar stories, unfamiliar relatives. Since you can't change, then fight! In short, it is the story of a young man from the 21st century who travels to "Blue Life and Death" and "Miss Mermaid". Please see how he educates his sister well and leads the whole family to a well-off life! /