High martial arts + kendo + slow heat + single female protagonist + light system + time travel
This is a cannibalistic world, and warriors are the main theme of this world and the elite of society!
There are no powerful family forces or religious sects with profound foundations in this world. There are just a group of human guardians!
A child who has been lying in bed for seventeen years and only wants to be ruined, but due to threats to his life, step by step embarks on the thorny path of martial arts training.