There is an online game novel in which someone goes to Japan to kill Yamata no Orochi.

I don’t remember, but I still want to introduce a few books to you

This is what I have been reading recently and I recommend it to you. They are all very good and worth watching.

Traveling through time and space to fight against the Japanese,

Madman (killing the world, standing at the top),

Feng Shui master (now Feng Shui, cutting off Yin and Yang, determining the terrain, Turn things around),