Giant of Light of the Grand Line

Due to an accident, Li Mu, an employee of a media company, traveled to the world of pirates and came to the era of Rocks! What? The era of Rocks? It was a pirate world even more cruel than Luffy's era, and whether he could survive or not was a problem. Simply activating the system, Li Mu unexpectedly discovered that he had the ability to transform into Ultraman! However, I thought that with Ultraman's abilities, I could sit back and relax. Until one day, a huge creature named "Monster" walked out of the depths of the sea. Ultraman? Little monster? The world is in chaos! ........ This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.