The Protagonist Travels Through the Ninja World.

The protagonist travels to the ninja world, makes a big fuss, looks for someone, and avenges his master, as well as the love story he picks up along the way. Everything that happens along the way will be written into my work, and he will eventually get married and have children. If there is a follow-up, I look forward to it. I hope you don't mind what is written. If you have any ideas, please point them out. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.