Editing Shinmai Maou no Keiyakusha:EX (section)

===Part 1===

Toujou Basara had been born and bred as a member of the Hero Tribe. And five years ago, he had lost that title – when he was only ten years old.

In a surprise attack on the Hero Tribe, the event that would come to be known as [The Tragedy], the young Basara was there. The bloody disaster happening before his eyes forced much shock and fear into him, yet he still struggled with his life to protect his childhood friend Yuki who would be killed. And in the end, his own powers went rampant, bringing into reality the worst case scenario.

The tragedy came to an end – and even more people were harmed because of Basara.

Discussions about Basara's punishment began after that. Even though it wasn't fully Basara's fault, the number of people who managed to remain calm after experiencing a tragedy that had never happened before numbered few. Imprisonment for life, an immediate execution because he is too dangerous – such talks went on.

However, Basara's father Jin saved him.

Known as the world's strongest Hero who had been dubbed as [God of War] in the previous war with the demons and feared by the enemy, the hero of heros, Jin, opposed the decided punishment.

With the disagreements within the Tribe about to evolve into an internal conflict, the elders made the decision to exile both Basara and Jin from the Tribe -- far away from his birthplace, and his friends whom he had grown up with.

After all that, both Basara and Jin began to live a normal life in Tokyo.

Basara attended a school where normal children went to, and Jin began working as a photographer. And just like that, time slowly went by.

While he had minor bumps while trying to adapt to the city life at the start, the strongest hero really is indeed something. Jin, who always had a flair for photography became a well-known professional photographer within a short time, and once his name began to spread, the economic circumstances of the Toujou household began to change greatly.  And the Basara who was very young at that time, eventually rose through to a junior high school, and a high school after that.

Time went by, and they lived a life as normal people.

But in these five years, that [Tragedy], Toujou Basara – what he had done, and his irredeemable errs – he was unable to forget them all.

He even felt that his way of taking responsibility wasn't right, to the point where he didn't know how he should face it. Until now, Basara is still carrying that burden.

The burden of the event that caused him to lose his status of a hero.

The burden of abandoning his dear friends.

--Just like that, the summer vacation of his first year in high school arrived while living his days filled with regret.

The daughter of the previous demon lord Wilbert, Mio, and the succubus accompanying her, Naruse Maria.

Protection of ones being targeted by hostile forces – the current demon lord of the demons has their eye on them, and becoming their family… After welcoming them over as his sisters, Toujou Basara's wheel of fate began spinning.

Living under the same roof, the prologue of their daily life together began.