CupOfWater

I've only read a couple chapters and am intrigued to read more. but I stopped because this book reminds me of Sengoku Komachi Kuroutan: Noukou Giga. It follows the same idea, the protaganist goes along with the same historic figure Oda. I think you should read the book I suggested after reading this one if you're after the same idea of book, but it overall is a good book.