Arnold is a lethargic prince who is ridiculed by the entire empire as an "insipid" runner. But in fact, he is the most powerful prince with a secret identity as Silver, an SS-grade adventurer who manipulates forbidden ancient magic! The story of the strongest prince who plays the role of an incompetent, and his secret struggle for the throne begins!

Kosuke Yuki, an ordinary high school boy on his first day of school,He saved an old man (actually God) who was almost hit by a train and died.As an apology, he was supposed to be reincarnated in another world with God's cheat powers, But he was accidentally sent back to the real world....... cheating ability as it is.Since then, he has been involved with a crazy criminal and has been noticed by a beautiful girl who is the class representative,and finally got involved in a shady Onmyouji wa...

Kosuke Yuki, a high school boy from Sapporo who wants to live as inconspicuously as possible, gets into one problem after another because of his God-given cheat powers.At the request of the black cat he rescued (actually a cat god in disguise), Kosuke takes part in a divine match between two onmyoji clans, the Mizukami and the Hinoyama.Struggling to make full use of his newly acquired powers, Kosuke summons... a mysterious little girl with pure-white hair?!Despite everything, Kosuke is fin...

Arnold is a lethargic prince who is ridiculed by the entire empire as an "insipid" runner. But in fact, he is the most powerful prince with a secret identity as Silver, an SS-grade adventurer who manipulates forbidden ancient magic! The story of the strongest prince who plays the role of an incompetent, and his secret struggle for the throne begins!

Kosuke Yuki was a ordinary high school student... until a slip-up from God gave him mysterious cheat powers.Just as he thought things were calming down after the onmyoji's divine battle, a mysterious group of superpowered ability users sets his sights on him.Kuro and Shiro try to protect Kosuke from the mysterious attackers, but despite their best efforts, they eventually clash.Moreover, the bespectacled girl he met on his first day of school, and the delinquent she seems to be close to, h...

Princess Marianne of Cornix have arrived at Wirth, the heart of the Adrasian Empire to seek asylum. The Emperor was thinking of turning Cornix into an ally...but also thought that it would be better if one of the princes marry Marianne. The first candidate was...Arnold!There was another issue he had to face. While Silver continued destroying the branches of Grimoire, he happened to bump into Haagenti --a demon who possesses power equal to SS-class adventurer.To defeat this dreadful monster...

Arnold, the seventh Imperial Prince of the Adrasia Empire, is called "THE INSIPID PRINCE" among people since his twin brother is genius and respected by all people. However, he has a secret identity -SILVER, one of the only five -SS-rank adventurers in the continent. When his younger brother Leo decides to aim for the throne, Arnold starts running things behind the scenes to support his brother. Unexpectedly the most beautiful lady becomes his assistant. The secret struggle of the stronges...

Arnold, the seventh Imperial Prince of the Adrasia Empire, is called "THE INSIPID PRINCE" among people since his twin brother is genius and respected by all people. However, he has a secret identity -SILVER, one of the only five -SS-rank adventurers in the continent. When his younger brother Leo decides to aim for the throne, Arnold starts running things behind the scenes to support his brother. Unexpectedly the most beautiful lady becomes his assistant. The secret struggle of the stronges...

Arnold is known as the "Insipid Prince" throughout the kingdom, for he has been acting as a lazy, careless prince.Only his twin brother, Leo, and some people close to him know that Arnold in reality is a clever guy who can outsmart almost anyone.Also he has a secret identity that even his brother don't know...he's Silver, an SS-class adventurer who can use ancient magic. Arnold hopes to make Leo the next emperor...but the conflict for the throne seems to never end.Gordon, a powerful genera...

Princess Marianne of Cornix have arrived at Wirth, the heart of the Adrasian Empire to seek asylum. The Emperor was thinking of turning Cornix into an ally...but also thought that it would be better if one of the princes marry Marianne. The first candidate was...Arnold!There was another issue he had to face. While Silver continued destroying the branches of Grimoire, he happened to bump into Haagenti --a demon who possesses power equal to SS-class adventurer.To defeat this dreadful monster...

Arnold, the seventh Imperial Prince of the Adrasia Empire, is called "THE INSIPID PRINCE" among people since his twin brother is genius and respected by all people. However, he has a secret identity -SILVER, one of the only five -SS-rank adventurers in the continent. When his younger brother Leo decides to aim for the throne, Arnold starts running things behind the scenes to support his brother. Unexpectedly the most beautiful lady becomes his assistant. The secret struggle of the stronges...

Princess Marianne of Cornix have arrived at Wirth, the heart of the Adrasian Empire to seek asylum. The Emperor was thinking of turning Cornix into an ally...but also thought that it would be better if one of the princes marry Marianne. The first candidate was...Arnold!There was another issue he had to face. While Silver continued destroying the branches of Grimoire, he happened to bump into Haagenti --a demon who possesses power equal to SS-class adventurer.To defeat this dreadful monster...