I'm an Ordinary Returning Student at the Academy - Chapter 5

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.

Attribute Classification: Overhead/Western Magic/Strong Attack/Sweet

- Description from novelbuddy

Genius, antisocial, solitary, intractable , maniacal.

At the turn of every era, it is he who raises the flag of the rebel cross.

Winners take it all, losers take the fall.

He who brings order to a chaotic world, assembles talents and masterminds.

He who hides among the crowd, yet stands on the top of the world.

— The one and only, him.

- Description from Novelupdates

Marrying her best friend was a dream come true for Kelly, but everything truly has a limitation.Pierce is Kelly’s first love, but as his best friend, she knew well there was always another woman deep in his heart.Lexi Gilbert. The woman Pierce could never forget even if he had already been arranged to marry Kelly.***Kelly finally realized their happy marriage of the last three years was just a beautiful dream when Pierce asked for a divorce just because Lexi returned.She could only be his best friend even if she was carrying his baby.***Since their friendship had become a cage, Kelly chose to set him free, as well as the miserable herself.But why then, it was Pierce who became the one who refused to move on?To make matters worse, her devil stepbrother also domineeringly stepped in at the same time, asking her to be his.***Her Prince Charming vs. Her Devil Stepbrother?How could Kelly save her heart in this battle of love and hate?