Only Sense Online (LN) - Volume 10 Chapter 5

You thought being reincarnated as an extra-side character was bad? Imagine being thrown into the body of a villain who is disowned by his own family and discarded by the author.

“I am not an ordinary detective, but a NEET detective. Searching the whole world to locate the words of the dead.”

The NEET Detective leading the NEETs who gathered in the dark alley – Alice said that.

The perplexing incident that Ayaka and I were wound into during the winter of my first year at high school, and also the malicious drug ‘Angel Fix’ that corroded the city, the mystery was unraveled by the detective girl Alice who doesn’t take even one step out of her room.

“Knowing the truth might destroy the tranquil life of your past, do you wish to know even so?”

Because of my answer, the NEETs who usually do nothing were mobilized to solve the case!

The world was once at war with 10 alternate worlds. This was known as the Concept War and our world won 60 years ago. All of this was concealed so no normal people are aware of this fact in the current time.

After the death of his grandfather, the high-school student Sayama Mikoto is suddenly summoned by the giant corporation IAI. He learns this world is headed for destruction due to the acceleration of the Minus Concepts. To prevent this, negotiations must be undertaken with the survivors of the other parallel worlds so their 10 concepts can be released.

And so Sayama is caught up in the final battle to clean up after the Concept War which left behind so much enmity.

The 7-year-old little crybaby met 11-year-old big brother who ran away from home.
[This man became the protector of redemption in his life]

The 16-year-old little dragon fell in love with a 20-year-old big brother.
[It’s a pity that the big brother didn’t recognize him as the little crybaby]

The 23-year-old single father and 27-year-old chief executive meets again.
[This time the little crybaby and his big brother are finally together]

Fortunately we met through hundreds of millions of people, Thank God, for letting us break through many obstacles and get back together again, falling in love with you and being with you again is the greatest fortune in my life.

- Description from Novelupdates