New Testament / Ribbon Knight (Volume 1-3 is the latest issue)

Publisher: Micromagazine
Author: Takeen -do, Osamu Tezuka
Size: 128mm x 182mm
Number of books: 3
Language: Japanese
Category: Youth manga, manga
Latest release date: 2020-05-15

Synopsis:
Prince Sapphire Review !!
Silverland, a country that can only succeed the throne.
The beautiful girl, sapphire, hid the gender to fulfill the will of the late king and pretended to be the prince, but was noticed by the Kingdom Prime Minister.
A beautiful assassin, Willem, was sent under the sapphire. Her secret is about to be revealed now ...!