He had lost everything... His family, his friends, his seniors and even his own life.They had failed to see the enemies real purpose... When the Aftokator and Meiden face each other a country has take advantage of it and attack them while their main base was not fully guarded, when they come back they were just shock at the scenery they have seen. And of course they fight for freedom but ended up losing. Taking everyone's live in to a hell including Osamu.

Right now he was standing in a pool of blood. No, not only his own blood but his comrades too. The rain drop from the sky to his comrades bodies. 

Osamu truly feel nothingness. 

The city he was born to was now a battlefield. The Tamakoma branch he used to hang out with was now shattered apart. His mother who he loves the dearest the most was now dead. His companions he treated as a family was all wrecked up. 

He glanced to the gray sky while the rain was pouring at him slowly washing away all of the feelings he had.

His wounds also opened resulting to start of the fall of his blood. The enemy was closing in but he didn't bother. He was open for his own death after losing his comrades. He was willing to die. 

All of this won't happen if he was stronger...

If only...

He can go back time and reverse everything...

That is his last thoughts as the enemy's sword pierce him and take his life away.

After a brief moment he felt cold running over his body. All he can see now was a pure darkness swallowing everything to him. 

"Don't worry... 

I will save you..." 

A numb familiar voice spoke until a light come over him and warm his body.

"Osamu"

"Osamu?"

"Osamu!"

A voice of a teenager shout to him. Osamu's eyes just become widen as the warm light turn into more clearer. It was a bulb of light. He put his head up from a sleeping form. He then realize he was at Chika's house but something was wrong. He turn at his left and saw two familiar figure. 

One was a small girl with black cup hair and eyes like sweet violet flower. It was clearly Chika but somehow smaller and more have childish look than the one he knows? And the other one is a young man of average age. He has slick, neck-length light brown hair, and also black eyes. Rinji Amatori to be precisely. 

"Osamu are you sick? You usually never sleep during my tutor" Rinji ask. Chika on the other hand look worried at him. Osamu just give the both of them a confuse look before analyzing the place again.

A calendar was hanging at the side of the room. It was set into March 2 2XXX . He just blink twice and rub his eyes again noticing his hand was also smaller. The year the calendar was set in was exactly 4 months before the first invasion of neighbors and exactly a year and ten months before Rinji Amatori's sudden disappearance. 

Wait... Did he perhaps... Just regressed?