Traveling Through the Tokusatsu World, Starting from Transforming into a Dragon Tooth

[Tips before reading: This book inherits the writing style of "As a Fun Man I Traveled to the Tokusatsu World", it's subversive, so if you don't like it, you can leave now] "Where did this come from? Why is there no one on the street?" "The system has been bound. Please defeat the first monster to open the system." "System? Weirdo? What the hell?" "Is it possible? I traveled through time!?"